Where it forms, where it's found
- Type locality
- Kushkanatau salt deposit
- Lower Amu Darya River (Amydar'ya)
- Karakalpakstan
- Uzbekistan
15recorded occurrences
Physical
- Transparency
- Translucent
- Colour
- White
- Streak
- White
- Cleavage
- Distinct/Good
Three noted, one of which is parallel to elongation
- Density
- 1.510 g/cm³
Optical
- Optical type
- Biaxial (-)
- Refractive index
- 1.488 – 1.5
- Principal indices
- nα 1.488 · nγ 1.500
- Dispersion
- weak
Δ = 0Δmax
PPLpleochroism per grain
XPLindependent extinctions · rotate the stage
PPLpleochroism only · colour blends on rotation
XPLinterference colour · extinct every 90°
Retardation120 nm
Order1st order
XPL colour
Crystallography
- Morphology
felted aggregates of fibrous crystals, dense masses
- Type-locality form
Dense, snow-white masses; appears as fibers under magnification
- Comment
Point Group: n.d.; Space Group: n.d. Z = n.d.
Chemical composition
Synonyms
- Hydroglauberiet
- Hydroglauberita
- IMA1968-026
In other languages
- German
- Hydroglauberit · IMA 1968-026
- Italian
- Hydroglauberite · Idroglauberite
- Chinese
- 水钙芒硝
Classification
Strunz
10th ed.7.CD.20
- 7SulfatesClass
- 7.CSulfates (selenates, etc.) without additional anions, with H2ODivision
- 7.CDWith only large cationsGroup
- 7.CD.20HydroglauberiteSpecies
Dana
8th ed.29.04.01.01
- 29Hydrated Acid and Normal SulfatesClass
- 29.04AmBn(XO4)p·xH2O, with (m+n):p < 3:2 and > 1:1Type
- 29.04.01— unnamed intermediate level —Group
- 29.04.01.01HydroglauberiteSpecies
CIM
—25.4.7
- 25SulphatesClass
- 25.4Sulphates of Ca, Sr and BaGroup
- 25.4.7HydroglauberiteSpecies
Literature, links & citation
Citations
- 1969Slyusareva, M.N. (1969) Hydroglauberite, a new mineral of the hydrous sulfate group. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 98(1): 59-62.
- 1970Fleischer, Michael (1970) New Mineral Names. American Mineralogist, 55 (1-2) 317-323
- 1986Gu Shuqi, Lin Huanzhu (1986) Experimental Studies on Hydroglauberite. Chinese Science Bulletin: 31(9): 624-629.
- 2005(2005) Hydroglauberite. Handbook of Mineralogy. Mineralogical Society of America
Cite this entry
@misc{mineral2026,
author = {Mineral Index editorial board},
title = {Hydroglauberite — Mineral Index},
year = {2026},
url = {https://mineralindex.org/minerals/hydroglauberite-1973},
note = {Accessed 2026-05-11}
}