Aramayoite

Aramayoite

COLOR

White with weak pleochroism. Takes a good polish.

REFLECTANCE

Rather high. Lower than galena. About the same as for lead sulfantimonides.

ANISOTROPISM

Bright in highly characteristic colored tints; orange-red brown to green.

TEXTURE

The mineral generally develops idiomorphically. Always shows beautiful twin lamellae with a distinc cleavage parallel to the twin planes.

ASSOCIATED MINERALS

Stannite, miargyrite, native bismuth, cassiterite, chalcostibite, owyheeite.

CRITERIA OF DETERMINATION

This mineral is easy to distinguish and cannot be misidentified because of orange-brown to green polarization colors, twin lamellae, distinc cleavage, high reflectance and color of sulfosalts. The mineral association is also highly characteristic.

Source

ATLAS OF ORE MINERALS (P. Picot and Z. Johan)