1910–1911
Britannica 11th
Encyclopaedia Britannica · 11th edition
ARGENTITE, a mineral which belongs to the galena group, and is cubic silver sulphide (AgjS). It is occasionally found as uneven cubes and octahedra, but more often as dendritic or earthy masses, with a blackish lead-grey colour and metallic lustre. The cubic cleavage, which is so prominent a feature in galena, is here present only in traces. The mineral is perfectly sectile and has a shining streak; hardness 2-3, specific gravity 7-3. It occurs in mineral veins, and when found in large masses, as in Mexico and in t…
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- Vol. 2, pp. 475-475