APPLICATIONS: | Minor ore of antimony and as mineral specimens. |
ASSOCIATED MINERALS: | Sphalerite, stibnite and nickeline. |
CHEMICAL STRUCTURE: | Sb, Elemental Antimony. |
CLASS: | Elements. |
CLEAVAGE: | Perfect in one direction (basal). |
COLOR: | Tin-white to a steel gray which can tarnish to darker grays. |
CRYSTRAL HABITS: | Pseudocubic rhombohedral crystals. More commonly found massive, botryoidal, lamellar and radiating. |
CRYSTAL SYSTEM: | Trigonal, bar 3 2/m. |
FIELD INDICATORS: | Density, softness, color, crystal habits, lack of smell and associations. |
FRACTURE: | Uneven. |
GENERAL INFORMATION: | Does not have a garlic odor. |
GEOGRAPHY: | Chihuahua, Mexico; Wolfe Co., Quebec, Canada and Kern Co., California, USA. |
GROUP: | Arsenic. |
HARDNESS: | 3 - 3.5. |
LUSTER: | Metallic but the tarnish will often dull the luster. |
TRANSPARENCY: | Opaque. |
SPECIFIC GRAVITY: | 6.6 - 6.7+. |
STREAK: | Tin-white to gray. |
