Perettiite-(Y)
Appearance
Perettiite-(Y) | |
---|---|
General | |
Category | Silicate mineral |
Formula (repeating unit) | Y2Mn4FeSi2B8O24 |
Crystal system | Orthorhombic |
Crystal class | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
Space group | Pmna |
Unit cell | a = 12.8252(5) Å, b = 4.6187(2) Å, c = 12.8252(5) Å; Z = 2 |
Identification | |
Crystal habit | Microscopic inclusion |
Cleavage | (010) |
Mohs scale hardness | 7 |
Specific gravity | 4.533 |
References | [1][2][3] |
Perettiite-(Y) is a complex silicate–borate mineral with the formula Y2Mn4FeSi2B8O24.[2] It was first discovered in 2015 by Adolf Peretti of the Gemresearch Swisslab (GRS). It was found as inclusions in a phenakite crystal from Mogok, Myanmar.[4]
Perettiite-(Y) was approved for IMA (International Mineralogical Association) status in 2015.
References
- ^ Mineralienatlas
- ^ a b Perettiite on Mindat.org
- ^ "Perettiite-(Y), Y3+2Mn2+4Fe2+[Si2B8O24], a new mineral from Momeik, Myanmar". European Journal of Mineralogy. 2015. doi:10.1127/ejm/2015/0027-2483.
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ignored (help) - ^ GRS - Perettiite – A New Mineral Discovery From Burma