Anthony R. Kampf

Anthony R. Kampf
Natural History Museum of Los Angeles County · Mineral Sciences

Ph.D.

About

555
Publications
102,229
Reads
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4,141
Citations
Citations since 2017
206 Research Items
2315 Citations
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Introduction
I conduct research principally in the areas of descriptive mineralogy, crystal chemistry, and structural crystallography, focusing on the characterization of new or inadequately described minerals. I am the U.S. delegate to the Commission on New Minerals, Classification and Nomenclature of the International Mineralogical Association.
Additional affiliations
January 1977 - present
Natural History Museum of Los Angeles County
Position
  • Curator / Curator Emeritus
Description
  • My position changed from Curator to Curator Emeritus on April 1, 2011.
September 1972 - December 1976
University of Chicago
Position
  • Research Assistant
September 1970 - June 1972
University of Illinois at Chicago
Position
  • Research Assistant
Education
September 1972 - December 1976
University of Chicago
Field of study
  • Mineralogy and crystallography
September 1970 - June 1972
University of Illinois at Chicago
Field of study
  • Mineralogy and crystallography
September 1966 - June 1970
University of Illinois at Chicago
Field of study
  • Chemistry

Publications

Publications (555)
Research
Full-text available
This is a list of new minerals descriptions for which Anthony R. Kampf is an author.
Article
The new mineral alumolukrahnite (IMA2022-059), CaCu 2+ Al(AsO 4) 2 (OH)(H 2 O), was found at the Jote mine, Copiapó Province, Chile, where it is a secondary alteration phase associated with conichalcite, coronadoite, gypsum, olivenite, pharmacosiderite, rruffite and scorodite. Alumolukrahnite occurs as crude diamond-shaped tablets up to about 0.1 m...
Article
Full-text available
The new mineral chenowethite, Mg(H2O)6[(UO2)2(SO4)2(OH)2]·5H2O, was found in efflorescence crusts on tunnel walls at the Blue Lizard, Green Lizard and Markey uranium mines in Red Canyon, San Juan County, Utah, USA. The crystals are long, thin blades up to about 0.5 mm long, occurring in irregular sprays and subparallel groups. Chenowethite is pale...
Article
Tomiolloite (IMA2021-019) is a new aluminium tellurite sulfite–sulfate mineral discovered at the Bambolla mine, Moctezuma, Sonora, Mexico, well-known tellurium (Te) mineral locality. Tomiolloite forms roughly spherical clusters of crystals comprised of very thin, needle-like crystals (1 μm diameter, ~40 μm length) around a core of small, stubbier,...
Article
The new mineral scenicite (IMA2021-057), [(UO2)(H2O)2(SO4)]2·3H2O, was found in the Green Lizard, Giveaway-Simplot, Markey and Scenic mines, White Canyon district, San Juan County, Utah, USA, where it occurs as a secondary phase on granular quartz matrix in association with various combinations of deliensite, gypsum, natrozippeite, rietveldite and...
Article
Full-text available
Oldsite (IMA2021–075), ideally K2Fe2+[(UO2)(SO4)2]2(H2O)8, is a new uranyl sulfate mineral found on specimens from the North Mesa Mine group, Temple Mountain, San Rafael district, Emery County, Utah, USA. It is a secondary mineral occurring with alum-(K), halotrichite, metavoltine, quartz, römerite, stanleyite, sulfur, szomolnokite, and mathesiusit...
Article
Nitroplumbite (IMA2021-045a), [Pb4(OH)4](NO3)4, is a new mineral discovered at the Burro mine, Slick Rock district, San Miguel County, Colorado, USA. It occurs in a secondary efflorescent assemblage on asphaltite and montroseite- and corvusite-bearing sandstone in association with baryte, chalcomenite, and volborthite. The mineral forms as brown eq...
Article
Pseudodickthomssenite (IMA2021-027), Mg(VO3)2·8H2O, is a new mineral discovered at the Pickett Corral mine, Bull Canyon, Montrose County, Colorado, USA. The mineral formed from the oxidation of montroseite-corvusite assemblages in a moist environment and occurs on asphaltite and on montroseite-corvusite-bearing sandstone in association with dicktho...
Article
Matthiasweilite (IMA2021-069), Pb2+Te4+O3, is a new mineral discovered at the Delamar mine, Lincoln County, Nevada, USA. It is a secondary mineral, associated with adanite, choloalite, northstarite, and other oxysalts in a quartz-rich matrix, that developed in an altered primary ore along with altaite, tetrahedrite-(Zn), native gold, and other sulf...
Article
Lauraniite, Cu6Cd2(SO4)2(OH)12·5H2O, is a new mineral from the Laurani Mine, Aroma Province, La Paz Department, Bolivia, where it is found as a secondary mineral associated with serpierite and brochantite, on a matrix consisting of tennantite and chalcocite. Lauraniite occurs as bladed crystals up to 110 μm in length. Crystals are pale blue and tra...
Article
The new mineral tombstoneite (IMA2021-053), (Ca 0.5 Pb 0.5 )Pb 3 Cu ²⁺ 6 Te ⁶⁺ 2 O 6 (Te ⁴⁺ O 3 ) 6 (Se ⁴⁺ O 3 ) 2 (SO 4 ) 2 ⋅3H 2 O, occurs at the Grand Central mine in the Tombstone district, Cochise County, Arizona, USA, in cavities in quartz matrix in association with jarosite and rodalquilarite. Tombstoneite crystals are green pseudohexagonal...
Article
Full-text available
Tomsquarryite, NaMgAl 3 (PO 4) 2 (OH) 6 q 8H 2 O, is a new secondary phosphate mineral from Tom's phosphate quarry, Kapunda, South Australia. It occurs as colourless, talc-like hexagonal platelets, with diameters of a few tens of micrometres when formed from the decomposition of minyulite and as thicker (∼ 10 µm) hexagonal crystals when formed from...
Article
Håleniusite-(Ce) (IMA2021-042), CeOF, is a new mineral discovered in ejectum from theÁgua de Pau volcano, Sãn Miguel Island, Azores District, Portugal. It occurs as opaque, cream-colored, fine-grained pseudomorphic replacements of hexagonal tablets of bastnäsite-(Ce). It is associated with astrophyllite and fluornatropyrochlore in a matrix composed...
Article
The new mineral nafeasite (IMA2021-103), NaFe 3+ (AsO 3 OH) 2 ·H 2 O, was found at the Torrecillas mine, Iquique Province, Chile, where it is a secondary alteration phase associated https://doi.org/10.1180/mgm.2022.58 Published online by Cambridge University Press with anhydrite, gypsum, halite, lavendulan, magnesiokoritnigite and natrojarosite. Na...
Article
Nitscheite (IMA2020-078), (NH4)2[(UO2)2(SO4)3(H2O)2]·3H2O, is a new mineral species from the Green Lizard mine, Red Canyon, San Juan County, Utah, U.S.A. It is a secondary phase found in association with chinleite-(Y), gypsum, pyrite, and Co-rich rietveldite. Nitscheite occurs in subparallel and divergent intergrowths of yellow prisms, up to about...
Article
Protocaseyite, [Al4(OH)6(H2O)12][V10O28]·8H2O, is a new mineral (IMA 2020-090) occurring in low-temperature, post-mining, secondary mineral assemblages at the Burro mine, Slick Rock district, San Miguel County, Colorado, USA. Crystals of protocaseyite are saffron-yellow, thick blades, with pale orange-yellow streak, vitreous luster, brittle tenacit...
Article
Dendoraite-(NH4), (NH4)2NaAl(C2O4)(PO3OH)2(H2O)2, is a new mineral species from the Rowley mine, Maricopa County, Arizona, U.S.A. It occurs in an unusual bat-guano-related, post-mining assemblage of phases that include a variety of vanadates, phosphates, oxalates and chlorides, some containing NH4+. Other secondary minerals found in association wit...
Article
Relianceite-(K), K4Mg(V4+O)2(C2O4)(PO3OH)4(H2O)10, is a new mineral species from the Rowley mine, Maricopa County, Arizona, U.S.A. It occurs in an unusual bat-guano-related, post-mining assemblage of phases. Other secondary minerals associated with relianceite-(K) are antipinite, dendoraite-(NH4), fluorite, mimetite, mottramite, rowleyite, salammon...
Article
Penriceite, [Mg(H2O)6][(Na(H2O)2Al3(PO4)2F6]·H2O, a new secondary phosphate mineral from the Penrice marble quarry, South Australia, is the fluorine analogue of aldermanite. It occurs as rod-like aggregates of platy crystals, with the platelets up to 100 μm across but only 1-2 μm thick. It is associated with angastonite, minyulite, perhamite, crand...
Article
Elliottite, NaMgAl 3 (PO 4) 2 F 6 ·9H 2 O, a new secondary phosphate mineral, is from Tom's phosphate quarry, Kapunda, South Australia. It occurs as hemispherical aggregates to 1 mm across comprising pseudohexagonal platelets overgrowing minyulite and amorphous angastonite on a matrix of goethite. Closely associated minerals are penriceite and wave...
Article
Full-text available
Michalskiite (IMA2019-162), Cu2+Mg3Fe3+3.33(VO4)6, is a new mineral found on specimens from the dump of the Lichtenberg open pit, Ronneburg uranium mining district, Thuringia, Germany. It is a secondary mineral occurring with arcanite, epsomite, hematite and syngenite on matrix consisting of fine-grained quartz, K-feldspar and mica. It forms striat...
Article
Philipsburgite has been redefined as the ordered intermediate member of the goldhillite-philipsburgite-kipushite isomorphous series with the ideal formula Cu5Zn[(AsO4)(PO4)](OH)6·H2O. The new mineral goldhillite, ideally Cu5Zn(AsO4)2(OH)6·H2O [or Cu5Zn(AsO4)(AsO4)(OH)6·H2O], is the arsenate end-member of this series. Goldhillite occurs on fracture...
Article
Donowensite (IMA2020-067), Ca(H2O)3Fe3+2(V2O7)2, and mikehowardite (IMA2020-068), Fe3+4(VO4)4(H2O)2·H2O, are intimately associated new secondary minerals from the Wilson Springs vanadium mine, Wilson Springs, Arkansas, USA. Donowensite has the following properties: needles up to 1 mm in length; yellow color; orange streak; subadamantine luster; bri...
Article
Kingsgateite, ZrMo 6+ 2 O 7 (OH) 2 ·2H 2 O, is a new supergene mineral from the Old 25 Pipe, Kingsgate, Gough Co., New South Wales, Australia. The mineral occurs in cavities in a quartz, muscovite matrix associated with molybdenite, gelosaite and mambertiite. It forms yellowish green to bluish grey, square tabular crystals to 0.12 mm across. Kingsg...
Article
The new mineral flaggite (IMA2021-044), Pb 4 Cu ²⁺ 4 Te ⁶⁺ 2 (SO 4 ) 2 O 11 (OH) 2 (H 2 O), occurs at the Grand Central mine in the Tombstone district, Cochise County, Arizona, USA, in cavities in quartz matrix in association with alunite, backite, cerussite, jarosite and rodalquilarite. Flaggite crystals are lime-green to yellow-green tablets, up...
Article
Full-text available
A reinvestigation of the type angastonite specimen from the Penrice marble quarry, South Australia, shows that the published powder X-ray diffraction pattern for the mineral corresponds to a mixture of crystalline phases plus an amorphous phase. The published formula for the mineral, CaMgAl2(PO4)2(OH)4⋅7H2O, has been found to correspond to the amor...
Article
Finchite (IMA2017-052), Sr(UO2)2(V2O8)·5H2O, is the first U mineral known to contain essential Sr. The new mineral occurs as yellow-green blades up to ~10 µm in length in surface outcrops of the calcrete-type uranium deposit at Sulfur Springs Draw, Martin County, Texas, USA. Crystals of finchite were subsequently discovered underground in the Pando...
Article
The decavanadate isopolyanion, [V10O28]6–, is a constituent of pascoite-family vanadate minerals and synthetic materials, and both protonated, [HxV10O28](6–x)–, and mixed-valence, [V4+xV5+10–x)O28](6+x)–, varieties have been described. Here we analyze the interaction between the interstitial complex and the decavanadate structural unit using the pr...
Article
Synthetic and naturally occurring forms of tricopper orthotellurate, Cu II 3 Te VI O 6 (the mineral mcalpineite) have been investigated by 3D electron diffraction (3D ED), X-ray powder diffraction (XRPD), Raman and infrared (IR) spectroscopic measurements. As a result of the diffraction analyses, Cu II 3 Te VI O 6 is shown to occur in two polytypes...
Article
Gunterite was originally assigned the ideal formula Na4[H2V10O28]·22H2O. More detailed bond-valence analysis brought into question the presence of a protonated decavanadate anion, which led to the reexamination of the mineral. Infrared spectroscopy confirmed the absence of NH4. Reinterpretation of the original crystal structure data and new electro...
Article
Celleriite, o(Mn22+Al)Al6(Si6O18)(BO3)3(OH)3(OH), is a new mineral of the tourmaline supergroup. It was discovered in the Rosina pegmatite, San Piero in Campo, Elba Island, Italy (holotype specimen), and in the Pikárec pegmatite, western Moravia, Czech Republic (co-type specimen). Celleriite in hand specimen is violet to gray-blue (holotype) and da...
Article
The new mineral paramarkeyite (IMA2020–024), Ca2(UO2)(CO3)3·5H2O, was found in the Markey mine, San Juan County, Utah, USA, where it occurs as a secondary phase on gypsum-coated asphaltum in association with andersonite, calcite, gypsum and natromarkeyite. Paramarkeyite crystals are transparent, pale green-yellow, striated tablets, up to 0.11 mm ac...
Article
Pomite (IMA2021-063), ideally Ca3[V4+5V5+10O37(CO3)]·37H2O, and pseudopomite (IMA2021-064), ideally Ca3.5[V4+6V5+9O37(CO3)]·32H2O, are two new polyoxometalate minerals from the Blue Streak mine, Bull Canyon, Montrose County, Colorado, U.S.A. Pomite properties: striated blades up to ~1 mm long; very dark green-blue color; green-blue streak; vitreous...
Article
Whiteite-(MnMnMn), Mn ²⁺ Mn ²⁺ Mn ²⁺ 2 Al 2 (PO 4 ) 4 (OH) 2 ⋅8H 2 O, is a new whiteite-subgroup member of the jahnsite group from the Foote Lithium Company mine, Kings Mountain district, Cleveland County, North Carolina, USA. It was found in small vugs of partially oxidised pegmatite minerals on the East dump of the mine, in association with eosph...
Article
A new mineral of the beryl group, johnkoivulaite, Cs(Be2B)Mg2Si6O18, was recovered from the gem gravels of the Pein Pyit area of the Mogok region in Myanmar. Thus far, only a single crystal has been identified. It has dimensions about 5.8×5.7×5.5 mm. This specimen has an irregular shape but still has discernible crystal form with geometric growth p...
Conference Paper
Secondary tellurium mineralogy has been expanding over the past 20 years thanks to several remarkable deposits mostly in western USA and further studies at Moctezuma, Mexico. These deposits continue to produce new minerals with new crystal-structure types and help us to understand the weathering history of this critical metal. The new mineral tomio...
Conference Paper
There is now an astonishing array of synthetic polyoxometalate (POM) compounds thanks to decades of research prompted by their important technological and biochemical uses. Most synthetic POM clusters are based on linkages of polyhedra centered by high-oxidation-state d-block metals (V 5+ , Nb 5+ , Ta 5+ Mo 6+ and W 6+). Many these clusters self-as...
Article
Full-text available
Demagistrisite, ideally BaCa2Mn3+4(Si3O10)(Si2O7)(OH)4·3H2O, is a new mineral found at the Cerchiara mine (eastern Liguria, La Spezia province, Italy). The ore consists of rhythmic interlaying of braunite-bearing metasediments (5–15 cm thick) and hematite-rich cherts. Demagistrisite occurs in association with cerchiaraite-(Mn), namansilite, noelben...
Article
Mineral species that contain the decavanadate isopolyanion [V10O28]6–, including its protonated and mixed-valence variants, constitute the pascoite family of minerals. Within the pascoite family, the isostructural minerals pascoite and magnesiopascoite form the pascoite group and the isostructural minerals lasalite and ammoniolasalite form the lasa...
Article
Wildcatite (IMA2020–019) is a new calcium–iron(III) tellurate discovered at the Wildcat prospect in the Detroit district, Juab County, Utah. Wildcatite may take on a variety of appearances, ranging from transparent orange to brown coatings or masses to earthy, white polycrystalline coatings filling jasperoid fracture surfaces. Coatings of wildcatit...
Article
The wallpaper-type crystal structure of wightmanite, Mg5(BO3)O(OH)5·1–2H2O, has been reanalyzed in order to better understand the position and bonding of hydrogen atoms. Single-crystal structure refinement yielded the monoclinic I2/m unit cell a = 13.5165(18), b = 3.0981(3), c = 18.170(3)Å, ß = 91.441(6)°, and V = 760.65(17)Å3, Z = 4. Hydrogen atom...
Article
Full-text available
Hydroxylpyromorphite, Pb5(PO4)3(OH), has been documented in the literature as a synthetic and naturally occurring phase for some time now but has not previously been formally described as a mineral. It is fully described here for the first time using crystals collected underground in the Copps mine, Gogebic County, Michigan. Hydroxylpyromorphite oc...
Article
Thebaite-(NH4), (NH4,K)3Al(C2O4)(PO3OH)2(H2O), is a new mineral species (IMA2020-072) from the Rowley mine, Maricopa County, Arizona, USA. It occurs in an unusual bat-guano-related, post-mining assemblage of phases that include a variety of vanadates, phosphates, oxalates and chlorides, some containing NH4⁺. Other secondary minerals found in associ...
Article
The new mineral uranoclite (IMA2020-074), (UO2)2(OH)2Cl2(H2O)4, was found in the Blue Lizard mine, San Juan County, Utah, USA, where it occurs as tightly intergrown aggregates of irregular yellow crystals in a secondary assemblage with gypsum. The streak is very pale yellow and the fluorescence is bright green-white under 405 nm ultraviolet light....
Article
The new minerals allantoin (IMA2020-004a), C 4 H 6 N 4 O 3 , and natrosulfatourea (IMA2019-134), Na 2 (SO 4)[CO(NH 2) 2 ], were found in the Rowley mine, Maricopa County, Arizona, USA, where they occur together in bat guano in association with aphthitalite and urea. Allantoin properties: colorless, transparent, untwinned blades to 0.3 mm; white str...
Article
Galeaclolusite, [Al 6 (AsO 4) 3 (OH) 9 (H 2 O) 4 ]•8H 2 O, is a new secondary hydrated aluminium arsenate mineral from Cap Garonne, Var, France. It forms crusts and spheroids of white fibres up to 50 μm long by 0.4 μm wide and only 0.1 μm thick. The fibres are elongated along [001] and flattened on (100). The calculated density is 2.27 g•cm-3. Opti...
Article
Native tungsten (IMA2011-004), W, is officially described as a new mineral from gold placers in the Bol'shaya Pol'ya river valley, Prepolar Urals, Russia, associated with yttriaite-(Y) and from quartz veins in the Mt Neroyka rock-crystal field, Ust–Puiva, Tyumenskaya Oblast', Russia. Tungsten forms polycrystalline grains and masses, and rarely cubo...
Article
L’articolo costituisce un aggiornamento della mineralogia della miniera abbandonata di Cassagna alla luce dei ritrovamenti effettuati nel periodo 2015-2020 grazie all’assiduità e alla grande pazienza di FC e alle caratterizzazioni (SEM-EDS, WDS, PXRD, SCXRD e microRaman) effettuate da ARK e altri mineralogisti. Dopo brevi note sulla storia estratti...
Article
The article, similar to what has already been published for the Cassagna Section, constitutes an update of the mineralogy of the abandoned Gambatesa Mine in the light of the findings made in the period 2015-2020, thanks to the on-field research by FC and to the characterizations (SEM-EDS, WDS, PXRD, SCXRD) carried-out by ARK. After brief notes on t...
Article
Jasonsmithite (IMA2019–121), Mn2+4ZnAl(PO4)4(OH)(H2O)7·3.5H2O, is a pegmatite-phosphate mineral from the Foote Lithium Company mine, Kings Mountain district, Cleveland County, North Carolina, USA. It is is interpreted as having formed by late–stage, low–temperature hydrothermal alteration. Crystals are colorless to light brown, slightly flattened p...
Article
Native tungsten (IMA2011-004), W, is officially described as a new mineral from gold placers in the Bol'shaya Pol'ya river valley, Prepolar Urals, Russia, associated with yttriaite-(Y) and from quartz veins in the Mt Neroyka rock-crystal field, Ust–Puiva, Tyumenskaya Oblast', Russia. Tungsten forms polycrystalline grains and masses, and rarely cubo...
Article
Seaborgite (IMA2019-087), LiNa6K2(UO2)(SO4)5(SO3OH)(H2O), is a new mineral species from the Blue Lizard mine, Red Canyon, San Juan County, Utah, U.S.A. It is a secondary phase found on gypsum in association with copiapite, ferrinatrite, ivsite, metavoltine, and römerite. Seaborgite occurs in sprays of light-yellow, long flattened prisms or blades,...
Article
Jeankempite, Ca 5 (AsO 4) 2 (AsO 3 OH) 2 (H 2 O) 7 , is a new mineral species (IMA 2018-090) discovered amongst coatings of arsenate minerals on oxidized copper arsenides from the Mohawk No. 2 mine, Mohawk, Keweenaw County, Michigan, USA. The new mineral occurs as lamellar bundles of colourless to white plates up to 1 mm in width and is visually in...
Article
The previously unknown crystal structure of pingguite was determined and refined from laboratory X-ray powder diffraction data using a synthetic sample. Additional single crystal diffraction of natural pingguite confirms that the crystal structure of the synthetic sample is identical to the natural mineral. This new crystal structure calls for a re...
Article
Monteneroite (IMA2020–028), Cu2+Mn2+2(AsO4)2·8H2O, is a new vivianite–structure mineral from the Monte Nero mine, Rocchetta di Vara, La Spezia, Liguria, Italy. It is a secondary mineral that crystallized from As–, Cu– and Mn–rich fluids and it is associated with braunite, copper, cuprite, rhodochrosite and strashimirite. Monteneroite occurs as ligh...
Article
Full-text available
The new mineral isselite, Cu 6 (SO 4 )(OH) 10 (H 2 O) 4 ⋅H 2 O, has been discovered in the Lagoscuro mine, Monte Ramazzo mining complex, Genoa, Eastern Liguria, Italy. It occurs as sprays of blue acicular crystals, up to 0.1 mm long, associated with brochantite and posnjakite. Streak is light blue and the lustre is vitreous. Isselite is brittle, wi...
Article
The new minerals natromarkeyite, Na 2 Ca 8 (UO 2) 4 (CO 3) 13 (H 2 O) 24 ⋅3H 2 O (IMA2018-152) and pseudomarkeyite, Ca 8 (UO 2) 4 (CO 3) 12 (H 2 O) 18 ⋅3H 2 O (IMA2018-114) were found in the Markey mine, San Juan County, Utah, USA, where they occur as secondary phases on asphaltum. Natromarkeyite properties are: untwinned blades and tablets to 0.2...
Article
Fulbrightite (IMA2019-032), Ca(VO) 2 (AsO 4) 2 Á4H 2 O, is a new mineral from the Packrat mine, near Gateway, Mesa County, Colorado, USA, and from the Rovnost mine, Jáchymov, Czech Republic. It is a low-temperature secondary phase. The mineral most typically occurs in shades of light green and forms rosettes of roughly square (pseudotetragonal) pla...
Article
Full-text available
IMA no. 2020-028 Monteneroite Cu2+Mn2+2(AsO4)2·8H2O Monte Nero mine, Rocchetta di Vara, La Spezia, Liguria, Italy (44°14'48"N, 9°45'27" E) Anthony R. Kampf*, Jakub Plášil, Barbara P. Nash, Marco E. Ciriotti, Fabrizio Castellaro, and Luigi Chiappino *E-mail: akampf@nhm.org Structurally related to vivianite Monoclinic: C2/m; structure determined a =...
Article
Hagstromite, Pb 8 Cu ²⁺ (Te ⁶⁺ O 6 ) 2 (CO 3 )Cl 4 , (IMA2019-093) is a new tellurate mineral from Otto Mountain near Baker, California, USA. It occurs on quartz in association with cerussite, fuettererite and thorneite. It is a secondary oxidation zone mineral and is presumed to have formed by oxidation of earlier formed tellurides, chalcopyrite a...
Article
Jahnsite-(CaMnZn), CaMn ²⁺ Zn 2 Fe ³⁺ 2 (PO 4 ) 4 (OH) 2 ⋅8H 2 O, is a new jahnsite-group mineral associated with alteration of phosphophyllite at the Hagendorf-Süd pegmatite, Bavaria. It forms as thin yellow crusts and brown epitactic growths on altered phosphophyllite, both of which comprise lath-like crystals in orthogonal orientation, up to 100...
Preprint
Full-text available
The new minerals natromarkeyite (IMA2018-152), Na 2 Ca 8 (UO 2) 4 (CO 3) 13 (H 2 O) 24 ·3H 2 O, and pseudomarkeyite (IMA2018-114), Ca 8 (UO 2) 4 (CO 3) 12 (H 2 O) 18 ·3H 2 O, were found in the Markey mine, San Juan County, Utah, USA, where they occur as secondary phases on asphaltum. Natromarkeyite properties: untwinned blades and tablets to 0.2 mm...
Article
Müllerite (IMA2019-060) is a new mineral found at several workings on Otto Mountain, 2.5 km NW of Baker, San Bernardino County, California, USA. Müllerite occurs as hexagonal tablets and thin plates up to 0.2 mm across, intergrown ball-like clusters, and scattered flakes. Crystals are yellow, tending to reddish-orange, and have a pale-yellow streak...
Article
Northstarite, Pb 6 (Te 4þ O 3) 5 (S 2 O 3), is a new mineral from the North Star mine, Tintic district, Juab County, Utah, USA. It is an oxidation-zone mineral occuring in a vug in massive quartz-baryte-enargite-pyrite in association with anglesite, azurite, chrysocolla, fluorapatite, plumbogummite, tellurite, zincospiroffite, and the new mineral a...
Article
Full-text available
Niasite (IMA2019-105) and johanngeorgenstadtite (IMA2019-122) are Ni4.52+(AsO4)3 dimorphs from Johanngeorgenstadt, Saxony, Germany. The two new minerals occur in association with one another and with aerugite, bunsenite, quartz, rooseveltite and xanthiosite. This mineral assemblage is apparently secondary in origin and most likely formed from the b...
Article
The new mineral pseudomeisserite-(NH4) (IMA2018-166), (NH4,K)2Na4[(UO2)2(SO4)5]·4H2O, was found in the Blue Lizard mine, San Juan County, Utah, USA, where it occurs as light yellow prisms in a secondary assemblage with belakovskiite, blödite, changoite, ferrinatrite, gypsum, ivsite, metavoltine, tamarugite. The streak is very pale yellow and the fl...
Article
The general structural formula for the walentaite group is [((A1yA1’1-y), A2)(H2O)n][Bx(As2)2-x(As3)M1(M2)2(TO4)2(O,OH)7], based on heteropolyhedral layers of configuration [M1(M2)2(TO4)2(O,OH)6], with surface attached species at the B, As2 and As3 sites, and with interlayer hydrated cation groups centred at the A sites. The group is divided into w...
Article
Cuyaite (IMA2019-126), Ca 2 Mn ³⁺ As ³⁺ 14 O 24 Cl, is a new arsenite mineral from near Cuya in the Camarones Valley, Arica Province, Chile. It is associated with anhydrite, native arsenic, arsenolite, calcite, claudetite, ferrinatrite, gajardoite-3 R , leiteite, magnesiocopiapite, phosphosiderite, pyrite, realgar and talmessite and formed from the...
Article
Adanite, Pb2(Te4+O3)(SO4), is a new oxidation-zone mineral from the North Star mine, Tintic district, Juab County, Utah, and from Tombstone, Cochise County, Arizona, USA. The characterization of the species is based principally on North-Star holotype material. Crystals are beige wedge-shaped blades, up to about 1 mm in length, in cockscomb intergro...
Article
The new mineral mauriziodiniite (IMA2019-036), NH 4 (As 2 O 3 ) 2 I, was found at the Torrecillas mine, Iquique Province, Chile, where it is a secondary alteration phase associated with calcite, cuatrocapaite-(NH 4 ), lavendulan, magnesiokoritnigite and torrecillasite on matrix consisting of native arsenic, arsenolite and pyrite. Mauriziodiniite oc...
Article
Kroupaite (IMA2017-031), ideally KPb0.5[(UO2)8O4(OH)10]·10H2O, is a new uranyl-oxide hydroxyl-hydrate mineral found underground in the Svornost mine, Jáchymov, Czechia. Electron-probe microanalysis (WDS) provided the empirical formula (K1.28Na0.07)Σ1.35(Pb0.23Cu0.14Ca0.05Bi0.03Co0.02Al0.01)Σ0.48[(UO2)7.90(SO4)0.04O4.04(OH)10.00]·10H2O, basis of 40...
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Smamite, Ca2Sb(OH)4[H(AsO4)2]·6H2O, is a new mineral species from the Giftgrube mine, Rauenthal, Sainte-Marie-Aux-Mines ore-district, Haut-Rhin department, France. It is a supergene mineral found in quartz-carbonate gangue with disseminated to massive tennantite-tetrahedrite series minerals, native arsenic, Ni-Co arsenides and supergene minerals pi...
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Uroxite (IMA2018-100), [(UO2)2(C2O4)(OH)2(H2O)2]·H2O, and metauroxite (2019-030), (UO2)2(C2O4)(OH)2(H2O)2, are the first two uranyl-oxalate minerals. Uroxite was found in the Markey mine, Red Canyon, Utah, USA and in the Burro mine, Slick Rock district, Colorado, USA. Metauroxite was found only in the Burro mine. Both minerals are post-mining, seco...