Joachim Lorenz's scientific contributions

Publications (2)

Article
Four isolated occurrences of Tertiary volcanic rocks in the northern Spessart at Beilstein, Hoher Berg, Madsteinand Kasselgrund are relics of volcanic vents or dikes. They display alkaline basalts (s.l.) with mainly trachybasalticcomposition, which, from normative mineral contents, may be designated as nepheline-bearing alkali-olivine basalts andba...
Article
Full-text available
Imperial Porphyry, a famous dimension stone of spectacular purple color, was quarried in the Mons Porphyrites area north of Jabal Dokhan in the Eastern Desert of Egypt, from the beginning of the first until the middle of the fifth century AD. During this period, the valuable material was processed as decorative stone and was used for objects of art...

Citations

... In the case of lithologies used as ornamental stone, they are valued for their aesthetics and their attractiveness and are generally used as a sign of distinction and just sometimes power, such as Roman porphyry (Abu El-Enen et al. 2018). The international interest in certain lithologies is well known, as is the case of Carrara marble (Primavori 2015) (Pereira and Cárdenes Van den Eynde 2019). ...