Knorringite
| Knorringite | ||
|---|---|---|
| General | ||
| Category | Specific gravity 3.756 | |
| Optical properties | Isotropic | |
| Refractive index | n = 1.803 | |
| References | [2][3][4] | |
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.[2][3]
Synthetic knorringite has the pure endmember formula Mg3Cr2(SiO4)3.Mohs scale of mineral hardness of six to seven.
It occurs as a rare component within
carbonates and micas
. It has been reported
from the Red Ledge mine in Nevada County, California in addition to the type location in Lesotho.[3]
Knorringite is a tracer mineral in the search for diamonds in kimberlite pipes.
References
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