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Tom Gressman

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Watch here: Mineral Talks LIVE - Episode 27 - Tom Gressman/Christi Cramer; The Mineralogical Record, Tucson, AZ

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Armenite image
Armenite
Tom Gressman
Silver (Spinel-law twin) image
Silver (Spinel-law twin)
Tom Gressman
1
Copper image
Copper
Tom Gressman
Wire Silver, Acanthite image
Wire Silver, Acanthite
Tom Gressman
Meta-autunite with Quartz image
Meta-autunite with Quartz
Tom Gressman
Gold with Quartz image
Gold with Quartz
Tom Gressman
Bournonite image
Bournonite
Tom Gressman

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