Uklonskovite

Uklonskovite (Na Mg(S O₄)F) is a colorless monoclinic mineral found in Chile, Italy and Uzbekistan. It is named after Alexandr Sergeievich Uklonskii (b. 1888), mineralogist, Academy of Sciences, Uzbekistan. Its type locality is Kushkanatau salt deposit, Lower Amu Darya River, Karakalpakstan Respublikasi, Uzbekistan.^[2][3][4]

Uklonskovite
General
Category	Sulfate minerals
Formula	NaMgSO4(OH)·2H2O
IMA symbol	Ukl[1]
Strunz classification	7.DF.05
Crystal system	Monoclinic
Crystal class	Prismatic (2/m) (same H-M symbol)
Space group	P21/m
Unit cell	a = 7.2 Å, b = 7.21 Å c = 5.73 Å; β = 113.23°; Z = 2
Identification
Color	colorless
Luster	vitreous
Diaphaneity	transparent
References	[2]