Perettiite-(Y)
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Perettiite-(Y) is a complex silicate–borate mineral with the formula Y2Mn4FeSi2B8O24.[3] 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.[5]
| Perettiite-(Y) | |
|---|---|
Perettiite inclusion in phenakite | |
| General | |
| Category | Silicate mineral |
| Formula | Y2Mn4FeSi2B8O24 |
| IMA symbol | Ptt-Y[1] |
| 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 | [2][3][4] |
Perettiite-(Y) was approved for IMA (International Mineralogical Association) status in 2015.
