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  3. Feldspar

Polished stones - 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
Belomorite, Smoky quartz
Code: 4131
Belomorite, Smoky quartz
Lake Long Lambina, North Karelia, RF
106*43*40mm

0.00 $ $26.67

Belomorite
Code: 4132
Belomorite
Lake Long Lambina, North Karelia, RF
64*57*19mm

0.00 $ $40.00

Amazonite
Code: 3378
Amazonite
Mount Ploskaya Kola Peninsula, RF
102*48*17mm

0.00 $ $26.67

Belomorite
Code: 3013
Belomorite
Lake Long Lambina, North Karelia, RF
79*65*19mm

0.00 $ $50.00

Belomorite VIDEO
Code: 2784
Belomorite VIDEO
Lake Long Lambina, North Karelia, RF
89*45*27mm

0.00 $ $46.67

Amazonite
Code: 1462
Amazonite
Mount Ploskaya Kola Peninsula, RF
69*47*21mm

0.00 $ $26.67

Amazonite
Code: 1187
Amazonite
Mount Ploskaya Kola Peninsula, RF
91*57*25mm

0.00 $ $26.67

Amazonite
Code: 1376
Amazonite
Mount Ploskaya Kola Peninsula, RF
70*54*19mm

0.00 $ $26.67

Belomorite
Code: 1780
Belomorite
North Karelia, RF
74*41*24mm

0.00 $ $36.67

Bertrandite, Fluorite, Pyrite , Feldspar
Code: 2236
Bertrandite, Fluorite, Pyrite , Feldspar
Ermakovskoe deposit, Buryatia, RF
61*56*21mm

0.00 $ $26.67

Labradorite, spectrolite "Rainbow" archived
Code: 4705
Labradorite, spectrolite "Rainbow"
Madagascar
135*89*57mm

0.00 $ $375.00

Belomorite archived
Code: 4246
Belomorite
North Karelia, RF
38*25*19mm

0.00 $ $26.67

Belomorite archived
Code: 4247
Belomorite
North Karelia, RF
53*32*17mm

0.00 $ $13.33

Belomorite archived
Code: 4133
Belomorite
Lake Long Lambina, North Karelia, RF
52*39*34mm

0.00 $ $15.00

Belomorite archived
Code: 4134
Belomorite
Lake Long Lambina, North Karelia, RF
59*38*17mm

0.00 $ $10.00

Belomorite archived
Code: 4135
Belomorite
Lake Long Lambina, North Karelia, RF
45*34*23mm

0.00 $ $16.67

Belomorite archived
Code: 4136
Belomorite
Lake Long Lambina, North Karelia, RF
44*32*10mm

0.00 $ $11.67

Belomorite archived
Code: 4137
Belomorite
Lake Long Lambina, North Karelia, RF
46*35*23mm

0.00 $ $6.67

Belomorite archived
Code: 4138
Belomorite
Lake Long Lambina, North Karelia, RF
42*24*21mm

0.00 $ $10.67

Belomorite archived
Code: 4139
Belomorite
Lake Long Lambina, North Karelia, RF
36*25*8mm

0.00 $ $13.33

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Shipping: worldwide
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