Breyite | |
---|---|
General | |
Category | Mineral |
Formula (repeating unit) | Ca3.01(2)Si2.98(2)O9 |
IMA symbol | Byi[1] |
Crystal system | Triclinic |
Space group | P1 |
Unit cell | a0 = 6.6970(4) Å, b0= 9.2986(7) Å, |
Identification | |
Colour | colorless |
Cleavage | not observed |
Luster | vitreous |
Density | 3.072 g/cm3 |
Ultraviolet fluorescence | non-fluorescent |
References | [2] |
Breyite is a high pressure calcium silicate mineral (CaSiO3) found in diamond inclusions.[3][4] It is the second most abundant inclusion after ferropericlase, for diamonds with a deep Earth origin.[5][4] Its occurrence can also indicate the host diamond's super-deep origin. This mineral is named after German mineralogist, petrologist and geochemist Gerhard P. Brey.