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Geffroyite Image

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Large Geffroyite Image

Mineral: Geffroyite: (Ag,Cu,Fe)9(Se,S)8
Comments: Silvery-gray grains of geffroyite to <0.5mm embedded in tan barite matrix.
Location: Moctezuma mine, Moctezuma, Sonora, Mexcio.
Scale: Overall: 3 x 2 x 2 cm.
Copyright: © Tom Loomis / Dakota Matrix
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