knorringite
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Knorringite is a mineral species belonging to the garnet group, and forms a series with the species pyrope. It was discovered in 1968 in the Kao kimberlite pipe in the Butha-Buthe District of Lesotho and is named after Oleg Von Knorring, a professor of mineralogy at the University of Leeds in England.
Wikidata facts
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- Nickel-Strunz 9th edition (updated 2009)
- 9.AD.25
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.AD.25
- IMA Mineral Symbol
- Krr
- chemical formula
- Mg₃Cr₂(SiO₄)₃
- Strunz 8th edition (series ID, updated)
- VIII/A.06c
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Knorringite is a mineral species belonging to the garnet group, and forms a series with the species pyrope. It was discovered in 1968 in the Kao kimberlite pipe in the Butha-Buthe District of Lesotho and is named after Oleg Von Knorring, a professor of mineralogy at the University of Leeds in England.
Synthetic knorringite has the pure endmember formula Mg3Cr2(SiO4)3. As knorringite is a member of the knorringite–pyrope series, natural samples contain variable aluminium in the chromium site. Knorringite is a greenish blue color with a Mohs scale of mineral hardness of six to seven.