Oldhamite

Image

Dark grey grains, masses and tiny veins of oldhamite in calcite, from Lichtenberg Absetzer Mine (dump), Ronneburg U deposit, Gera, Thuringia, Germany. Ex Fritz Rüger collection. Field of view 1.5 cm.

© Photo by Leon Hupperichs (via Wikimedia Commons), CC-BY-SA 3.0

Properties

Formula (Ca,Mg,Fe)S
Abbreviation Old
Classification Galena (group)
Luminescence emitters Ce, Mn
IMA Status Grandfathered (pre-IMA), 1870
Search other databases webmineral.com, mindat.org, rruf.info, fluomin.org, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags Mineral, Sulphide

Composition

Element Wt%
Mg 1.68
Ca 50
Fe 3.87
S 44.45
Total: 100

Reference

Reference Lines Spectra Images
Moore & Karakus 1994 2 0 0