Tamarugite

Tamarugite (NaAl(SO4)2·6H2O) is a colorless monoclinic sulfate mineral.[1][2]

Tamarugite
General
CategorySulfate mineral
Formula
(repeating unit)
NaAl(SO4)2 · 6H2O
Strunz classification7.CC.10
Dana classification29.5.3.1
Crystal systemMonoclinic
Crystal classPrismatic (2/m)
Space groupP21/a (no. 14)
Identification
ColorColorless
Crystal habitPrismatic, tabular
TwinningPolysynthetic
Cleavage{010} perfect
Mohs scale hardness3
LusterVitreous
DiaphaneityTransparent
Specific gravity2.07
Density2.07 (measured)
Optical propertiesBiaxial (+), colorless (transmitted light)
2V angle60° (measured), 48° (calculated)
SolubilitySoluble in water
Other characteristicsSlightly astringent and sweet taste
References[1][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, and Africa).[2] The mineral's name comes from the Tamarugal Pampa locality in Chile.[1][2] It is also known as lapparentite.

See also

References

  1. Webmineral.com - Tamarugite
  2. Mindat.org - Tamarugite
  3. 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. PMID 24098156.

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. 466-468.
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