Nadorite
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| Nadorite | |
|---|---|
 |
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| General | |
| Category | Halide mineral |
| Chemical formula | PbSb[O2|Cl] |
| Strunz classification | 03.DC.30 |
| Identification | |
| Color | Brown, brownish-yellow, yellow |
| Crystal system | Orthorhombic |
| Twinning | On {101}, nearly perpendicular (91°45'), common |
| Cleavage | On {010}, perfect |
| Fracture | Uneven |
| Mohs scale hardness | 3½ - 4 |
| Luster | Adamantine, Resinous |
| Streak | White, yellow to yellowish white |
| Diaphaneity | Translucent |
| Density | 7 |
| Refractive index | nα = 2.300 nβ = 2.340 - 2.350 nγ = 2.360 - 2.400 |
| Birefringence | δ = 0.060 - 0.100 |
| Dispersion | Strong |
| References | [1][2] |
Nadorite is a mineral with the chemical formula PbSb[O2|Cl].[1] It crystallizes in the orthorhombic crystal system and is brown, brownish-yellow or yellow in colour, with a white or yellowish-white streak.[1]
Nadorite is named after Djebel Nador in Algeria, where it was first identified in 1870.[1] Djebel Nador and Djebel Debbar (both in the Constantine Province of Algeria) are its co-type localities.[1]
[edit] References
- ^ a b c d e "Nadorite". Mindat.org. http://www.mindat.org/min-2827.html. Retrieved 2008-04-16.
- ^ Nadorite data at Webmineral
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