Nicolae Calin

Nicolae Calin
Geological Institute of Romania | IGR · Department of Geology

About

30
Publications
2,221
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7
Citations
Citations since 2016
14 Research Items
5 Citations
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2016201720182019202020212022012345
Introduction
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Publications

Publications (30)
Article
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The rare minerals, inesite, Ca2Mn 2+ 7Si10O28(OH)2·5H2O, hubeite, Ca2Mn 2+ Fe 3+ Si4O12(OH)·2H2O, and ruizite, Ca2Mn 3+ Si4O11(OH)4·2H2O, were determined, for the first time, by optical and XRD analyses, at Cavnic (Baia Mare Neogene metallogenetic district, Eastern Carpathians, Romania) in a gold-bearing, base metal deposit. Inesite was refined as...
Article
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Article
This paper presents the characterization of a Ni-Cu thin layer electrodeposited onto a steel substrate. The characterization of these films was performed with X-ray diffraction spectroscopy, Raman spectroscopy and Scanning electron microscopy. The results of the XRD analysis showed a Face Centered Cubic structure and the Raman spectroscopy indicate...
Conference Paper
Full-text available
Phosphogypsum is a technogenic product resulted after the extraction of phosphoric acid from raw phosphate (apatitic) rock by nitric or sulfuric leaching. In Romania, huge stacks of phosphogypsum resulted from sulfuric leaching are located at Valea Călugărească (56 ha), Turnu Măgurele (64 ha), Năvodari (48 ha) and Bacău (20 ha). The chemistry of di...
Poster
Full-text available
The present study highlights the fact that having the mark of the rocks through which they pass, geothermal waters from Beius Basin have, in their natural state, an important content of metals. This fact encourages us to believe that, through anthropic methods, it is possible to increase even more this content of metals in the exploited geothermal...
Conference Paper
Full-text available
Gatehouseite, Mn5(PO4)2(OH)4, is a rare Mn-bearing phosphate, since this mineral is only reported in a sedimentary iron ore deposit in Australia (Pring and Birch, 1993). Like in many Mn-bearing phosphates structures, Fe may replace Mn and a complete solid solution often exists between the Mn- and Fe-bearing end-members. One more time, our work lead...
Conference Paper
Full-text available
Phosphogypsum is a technogenic product remaining after the extraction of phosphoric acid from raw phosphate, mainly apatite. The original phosphate rock contains large amounts of REE, mainly replacing Ca from apatite or included in other phosphate structures. About 70% of the REE contents are stacked in the phosphogypsum obtained after sulfuric att...
Article
Full-text available
The high-temperature skarn of Cornet Hill (Apuseni Mountains, Romania) is known as one of the rare occurrences of spurrite and tilleyite worldwide. Both minerals concentrate in the outer skarn zone, corresponding to the exoskarn, at the contact between a monzodiorite-quartz monzonite body of Upper Cretaceous age and Tithonic-Kimmeridgian reef limes...

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