Difference between revisions of "Ballas"
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* ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976 | * ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976 | ||
| − | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "industrial diamond" | + | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "industrial diamond" Encyclopædia Britannica [Accessed March 4, 2002]. |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Revision as of 07:21, 24 July 2013
Description
Small, imperfectly crystallized pieces of diamond. Ballas stones are rounded with no distinct cleavage. They are extremely hard and tough. Ballas is mined in Brazil and South Africa. The industrial grade diamond is primarily used as an abrasive.
Synonyms and Related Terms
shot bort; industrial grade diamond
| Composition | C |
|---|---|
| Mohs Hardness | 10 |
Comparisons
Properties of Common Abrasives
Authority
- Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
- Encyclopedia Britannica, http://www.britannica.com Comment: "industrial diamond" Encyclopædia Britannica [Accessed March 4, 2002].