Yellow grape-like arsenic too Pb ore limonite

Yellow grape-like arsenic as well as Pb ore limonite the students inwards the surrounding rock.

Formula: As
System: Trigonal
Colour: Tin-white, tarnishing to …
Lustre: Metallic, Dull
Hardness: 3½


From United Mexican U.S. of A. (San Pedro, Corralitos, Chihuahua, Mexico),


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