Chemistry:Nadorite
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Nadorite | |
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General | |
Category | Halide mineral |
Formula (repeating unit) | PbSbO2Cl |
Strunz classification | 3.DC.30 |
Crystal system | Orthorhombic |
Crystal class | Dipyramidal (mmm) H-M Symbol: (2/m 2/m 2/m) |
Space group | Bmmb |
Identification | |
Color | Brown, brownish-yellow, yellow |
Twinning | On {101}, nearly perpendicular (91°45'), common |
Cleavage | On {010}, perfect |
Fracture | Uneven |
Mohs scale hardness | 3 1⁄2 - 4 |
|re|er}} | 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 |
Alters to | To cerussite |
References | [1][2] |
Nadorite is a mineral with the chemical formula PbSbO2Cl.[1] It crystallizes in the orthorhombic crystal system and is brown, brownish-yellow or yellow in color, with a white or yellowish-white streak.[1]
Nadorite is named after Djebel Nador in Algeria, where it was first identified in 1870.[1]
Geologic occurrence
Djebel Nador and Djebel Debbar (both in the Constantine Province of Algeria) are its co-type localities. Also found as an alteration product of jamesonite in Cornwall, England .[1]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 "Nadorite". Mindat.org. http://www.mindat.org/min-2827.html. Retrieved 2008-04-16.
- ↑ Nadorite data at Webmineral
- ↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode: 2021MinM...85..291W.
Bibliography
- Palache, P.; Berman H.; Frondel, C. (1960). "Dana's System of Mineralogy, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. (Seventh Edition)" John Wiley and Sons, Inc., New York, pp. 1039-1041.
![]() | Original source: https://en.wikipedia.org/wiki/Nadorite.
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