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agate

Place Collected: Artigas
Arsenopyrite with Pyrite

Arsenopyrite with Pyrite

Place Collected: Panasqueira
Image Not Available

Axinite-(Fe)

Place Collected: Puiva
Image Not Available

Azurite

Place Collected: Yang Chweng Mine
Azurite

Azurite

Place Collected: Morenci
Azurite

Azurite

Place Collected: Touissit
Image Not Available

BARITE

Place Collected: Northumberland Mine
BARITE

BARITE

Place Collected: Elmwood Mine
Image Not Available

BERYL var. Emerald

Place Collected: Ekaterinburg
BERYL with CASSITERITE and Muscovite

BERYL with CASSITERITE and Muscovite

Place Collected: Mt. Xuobaoding
Botryogen

Botryogen

Place Collected: Falu Copper Mine
Image Not Available

Bournonite

Place Collected: Des Maline mine
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