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Diameter, mm (1mm - 0,039inch)

Fluorescent Minerals (UV) "Feldspar"

Feldspar is a widespread group of rock-forming minerals. Feldspars form two isomorphic series: albite - orthoclase and albite - anorthite. It has a number of types: albite, oligoclase, andesine, labradorite, bytonite, anorthite, orthoclase, adularia, microcline, sanidine, celsian.

You can see feldspar stone for sale and buy it in the Minerals of Russia online store.

Physical properties of Feldspar

Category Tectosilicate
(repeating unit)
KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8
IMA symbol Fsp
Crystal system Triclinic or monoclinic
Color pink, white, gray, brown, blue
Cleavage two or three
Fracture along cleavage planes
Mohs scale hardness 6.0–6.5
Luster Vitreous
Streak white
Diaphaneity opaque
Specific gravity 2.55–2.76
Density 2.56
Refractive index 1.518–1.526
Birefringence first order
Pleochroism none
Other characteristics exsolution lamellae common
Code: 3864
Northern quarry, Mount Alluive, Lovozersky massif, Kola Peninsula, RF

0.00 $ $15.00

Code: 2048
Manifestation "Luck", Khabarovsk Territory, Primorye, RF

0.00 $ $51.67

Code: 1755
Manifestation "Luck", Khabarovsk Territory, Primorye, RF

0.00 $ $51.67

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