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

Stone sphere balls - full range in stock "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

General
Category Tectosilicate
Formula
(repeating unit)
KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8
IMA symbol Fsp
Crystal system Triclinic or monoclinic
Identification
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: 3916
Etyka, Transbaikalia, RF
92mm

0.00 $ $350.00

Code: 2019
Etyka, Transbaikalia, RF
69mm

0.00 $ $198.33

Code: 557
North Karelia, RF
45mm

0.00 $ $106.67

Code: 1559
North Karelia, RF
55mm

0.00 $ $150.00

Code: 1560
North Karelia, RF
53mm

0.00 $ $143.33

Code: 1561
North Karelia, RF
51mm

0.00 $ $123.33

Code: 1425
Ermakovskoe deposit, Buryatia, RF
62mm

0.00 $ $198.33

Code: 1382
North Karelia, RF
71mm

0.00 $ $266.67

Code: 1383
North Karelia, RF
42mm

0.00 $ $93.33

Code: 1250
Etyka, Transbaikalia, RF
75mm

0.00 $ $198.00

Code: 1558
North Karelia, RF
62mm

0.00 $ $166.67

Code: 811
Lake Long Lambina, North Karelia, RF
78mm

0.00 $ $320.00

Code: 2221
North Karelia, RF
54mm

0.00 $ $56.67

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