Ein Vorkommen von Lorandit (T1AsS2) in der Schweiz

✍ Scribed by Stefan Graeser

• Book ID: 104745510
• Publisher: Springer
• Year: 1967
• Tongue: English
• Weight: 319 KB
• Volume: 16
• Category: Article
• ISSN: 0010-7999
• DOI: 10.1007/bf00371607

✦ Synopsis

A new find of the thallium-arsenic-sulphosalt mineral lorandite in the Triassic dolomite of the famous Lengenbach quarry in Binnatal, Ct. Wallis (Switzerland) is described. Herewith the Lengenbaeh is, up to now, only the third locality, where lorandite has been found at all. The d-values for X-ray powder pattern, morphological data, and a microprobe analysis are given. Reflection percentage (for green light of 5300 A) is 32.6 %, Vickers hardness nmnber (with load of 30 g) is 38.9. Relations to the different thMlium-sulphosalts of the Lengenbaeh are discussed.