Tamarugite
Appearance
Tamarugite | |
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General | |
Category | Sulfate mineral |
Formula (repeating unit) | NaAl(SO4)2 · 6H2O |
IMA symbol | Tmr[1] |
Strunz classification | 7.CC.10 |
Dana classification | 29.5.3.1 |
Crystal system | Monoclinic |
Crystal class | Prismatic (2/m) |
Space group | P21/a (no. 14) |
Identification | |
Color | Colorless |
Crystal habit | Prismatic, tabular |
Twinning | Polysynthetic |
Cleavage | {010} perfect |
Mohs scale hardness | 3 |
Luster | Vitreous |
Diaphaneity | Transparent |
Specific gravity | 2.07 |
Density | 2.07 (measured) |
Optical properties | Biaxial (+), colorless (transmitted light) |
2V angle | 60° (measured), 48° (calculated) |
Solubility | Soluble in water |
Other characteristics | Slightly astringent and sweet taste |
References | [2][3][4] |
Tamarugite (NaAl(SO4)2·6H2O) is a colorless monoclinic sulfate mineral.[2][3]
Deposits containing tamarugite are geographically dispersed with occurrences of the mineral on all seven continents (Antarctica, Oceania, North America, South America, Europe, Asia, Africa).[3] The mineral's name comes from the Tamarugal Pampa locality in Chile.[2][3] It is also known as lapparentite.
See also
[edit]References
[edit]- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ a b c Webmineral.com - Tamarugite
- ^ a b c d Mindat.org - Tamarugite
- ^ Mereiter, Kurt (15 October 2013). "Redetermination of tamarugite, NaAl(SO 4 ) 2 ·6H 2 O". Acta Crystallographica Section E. 69 (10): i63–i64. doi:10.1107/S1600536813025154. PMC 3790334. PMID 24098156.
Bibliography
[edit]- 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. 466–468.