Difference between revisions of "Cobaltite"
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cobalt glance; cobaltite (Fr.); cobaltita (Esp.); Kobaltglanz (Deut.); cobaltiet (Ned.) | cobalt glance; cobaltite (Fr.); cobaltita (Esp.); Kobaltglanz (Deut.); cobaltiet (Ned.) | ||
| − | == | + | == Risks == |
| − | Isometric crystalline system, often found as cubes. Fracture = uneven; brittle. Cleavage =perfect in one direction. Luster = metallic. Streak = grayish black. | + | * Inhalation of dust is toxic. |
| + | |||
| + | ==Physical and Chemical Properties== | ||
| + | |||
| + | * Isometric crystalline system, often found as cubes. | ||
| + | * Fracture = uneven; brittle. | ||
| + | * Cleavage =perfect in one direction. | ||
| + | * Luster = metallic. | ||
| + | * Streak = grayish black. | ||
{| class="wikitable" | {| class="wikitable" | ||
| Line 20: | Line 28: | ||
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 6-6.3 | + | | 6-6.3 g/ml |
|} | |} | ||
| − | == | + | ==Resources and Citations== |
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | + | * Mineralogy Database: [http://www.webmineral.com/data/Cobaltite.shtml Cobaltite] | |
* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | ||
Latest revision as of 12:19, 30 May 2022
Description
A silvery white mineral that is an important cobalt ore. Cobaltite is a combined sulfur and arsenic salt of cobalt. It is mined in Canada (Ontario), Zaire, Azerbaijan, India (Rajasthan), England, Norway, and Sweden (Tunaberg). Cobaltite has a metallic luster with a grayish black streak. It is brittle and fractures irregularly.
Synonyms and Related Terms
cobalt glance; cobaltite (Fr.); cobaltita (Esp.); Kobaltglanz (Deut.); cobaltiet (Ned.)
Risks
- Inhalation of dust is toxic.
Physical and Chemical Properties
- Isometric crystalline system, often found as cubes.
- Fracture = uneven; brittle.
- Cleavage =perfect in one direction.
- Luster = metallic.
- Streak = grayish black.
| Composition | CoAsS |
|---|---|
| Mohs Hardness | 5.5 |
| Density | 6-6.3 g/ml |
Resources and Citations
- Mineralogy Database: Cobaltite
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
- Encyclopedia Britannica, http://www.britannica.com Comment: "cobaltite" [Accessed December 11, 2001
- C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979