Aksaite

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Aksaite
General
CategoryNesoborates
Formula
(repeating unit)
Mg[B6O7(OH)6]·2H2O
Strunz classification6.FA.05
Dana classification26.6.4.1
Crystal systemOrthorhombic
Dipyramidal class
Space groupOrthorhombic
H-M symbol: (2/m 2/m 2/m)
Space group: Pbca
Identification
ColorColorless, white to pale grey
CleavageDistinct/Good; Probable on {100} and {010}
Mohs scale hardness2.5
StreakWhite
DiaphaneityTransparent to translucent
Optical propertiesBiaxial (-)
Birefringenceδ = 0.055
2V angleMeasured = 88°; Calculated = 78°
DispersionNone
References[1][2]

Aksaite (Mg[B6O7(OH)6]·2H2O) is a mineral found in Kazakhstan.

Etymology and History[edit]

Aksaite is named after the place it was discovered, Ak-say (lit. White Glen). It was found in 1963 in Chelkar Salt Dome, Ak-say Valley, Kazakhstan.

References[edit]