Featured this weekMineral
Bromargyrite
AgBr
Bromargyrite is an ore of silver, and is very similar to Chlorargyrite, with which it forms a solid solution series. Bromargyrite contains the halogen bromine combined with silver, whereas Chlorargyrite contains chlorine with silver.
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Tennantite is the arsenic-rich end member of the Tetrahedrite series.
Mineral
Tennantite
Xenotime describes a group of several closely related phosphates, arsenates, and vanadates composed of rare earth elements.
Mineral
Xenotime
The images below depict each gem variety of Beryl. (We are lacking a good image of Red Beryl.
Gemstone
Beryl
Graphite is a mineral composed exclusively of the element carbon.
Mineral
Graphite
Uvarovite is a rare member of the Garnet group that is consistently deep green in color.
Mineral
Uvarovite
Turquoise is an ancient gemstone, and has been highly regarded in many
of the world's civilizations.
Gemstone
Turquoise
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