Breyite
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.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/3/39/CaSiO3_Phase_Diagram.png/293px-CaSiO3_Phase_Diagram.png)
CaSiO3 phase diagram showing Breyite is stable around 9-12.5 GPa[6]
References[]
- ^ "Breyite". www.mindat.org. Retrieved 2022-01-15.
- ^ Brenker, Frank E.; Nestola, Fabrizio; Brenker, Lion; Peruzzo, Luca; Harris, Jeffrey W. (1 January 2021). "Origin, properties, and structure of breyite: The second most abundant mineral inclusion in super-deep diamonds". American Mineralogist. 106 (1): 38–43. doi:10.2138/am-2020-7513.
- ^ Alderton, David; Elias, Scott (2020). Encyclopedia of Geology. Elsevier Science. p. 467. ISBN 9780081029091.
- ^ a b Brenker, Frank E.; Nestola, Fabrizio; Brenker, Lion; Peruzzo, Luca; Harris, Jeffrey W. (2021-01-01). "Origin, properties, and structure of breyite: The second most abundant mineral inclusion in super-deep diamonds". American Mineralogist. 106 (1): 38–43. doi:10.2138/am-2020-7513. ISSN 1945-3027.
- ^ "Breyite". www.mindat.org. Retrieved 2022-01-15.
- ^ Milani, Sula; Comboni, Davide; Lotti, Paolo; Fumagalli, Patrizia; Ziberna, Luca; Maurice, Juliette; Hanfland, Michael; Merlini, Marco (2021-06-19). "Crystal Structure Evolution of CaSiO3 Polymorphs at Earth's Mantle Pressures". Minerals. 11 (6): 652. doi:10.3390/min11060652. ISSN 2075-163X.
Categories:
- Silicate minerals
- Calcium minerals
- High pressure science
- Diamond
- Silicate mineral stubs