Malayaite
| Malayaite | |
|---|---|
| General | |
| Category | Titanite mineral |
| Formula (repeating unit) | CaSnO[SiO4] |
| Crystal system | Monoclinic-Prismatic |
| Unit cell | a = 7.15Å, b = 8.89Å, c = 6.66Å β = 113.4° |
| Identification | |
| Formula mass | 266.87 gm |
| Color | Colorless, Greenish gray, White, Light yellow, Orange |
| Crystal habit | Massive or wedge shaped |
| Mohs scale hardness | 3.5 - 4 |
| Luster | Vitreous |
| Streak | White |
| Diaphaneity | Translucent |
| Density | 4.3 - 4.55 |
| Optical properties | Biaxial |
| Refractive index | nα = 1.765 nββ = 1.784 nγ = 1.799 |
| Birefringence | δ=0.0340-0.0350 |
| Pleochroism | x=colorless, y=coloreless, z = pale yellow |
| Other characteristics | Fluorescent, Short UV=bright yellowish green |
| References | [1] |
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Malayaite has the general formula CaSnO[SiO4][2]. The first half of the name, 'Malay', originates from the locality in which it was found; which is the Malay Peninsula in Malaysia.[3] 'aite' indicates that this mineral is a member of the Titanite-group of minerals.
References
- ^ http://www.mindat.org/min-2552.html, http://webmineral.com/data/Malayaite.shtml, http://www.handbookofmineralogy.org/pdfs/malayaite.pdf
- ^ http://webmineral.com/data/Malayaite.shtml Webmineral.com. Retrieved 2010-09-17.
- ^ http://www.mindat.org/min-2552.html Mindat.org. Retrieved 2010-09-17.