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Diameter, mm (1mm - 0,039inch)
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  2. Collectible minerals
  3. Astrophyllite

Collectible minerals - full range in stock "Astrophyllite"

Astrophyllite is an igneous mineral whose name comes from the Greek for "star". The best astrophyllite in the world is mined in Russia, in the Khibiny. It has no practical application, but is appreciated by jewelers.

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

Physical properties of Astrophyllite

General
Category Inosilicates
Astrophyllite group
Formula
(repeating unit)		 (K,Na)3(Fe++,Mn)7Ti2Si8O24(O,OH)7
IMA symbol Ast
Strunz classification 9.DC.05
Crystal system Triclinic
Crystal class Pinacoidal (1)
(same H-M symbol)
Space group A1
Identification
Color Golden brown to yellow; rarely greenish
Crystal habit Tabular to bladed, radiating, stellate aggregates; lamellar masses
Cleavage Perfect on [001] imperfect on [100]
Fracture Uneven
Mohs scale hardness 3-4
Luster Greasy, pearly, sub-metallic
Streak Yellowish brown or white
Diaphaneity Translucent to opaque
Specific gravity 3.2–3.4
Optical properties Biaxial positive
Refractive index nα = 1.680 nβ = 1.700 nγ = 1.730
Birefringence 0.050
Pleochroism Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow

Aenigmatite, Astrophyllite
Code: 4385
Aenigmatite, Astrophyllite
Khibiny, Kola Peninsula, RF
49*35*16mm

0.00 $ $19.67

Astrophyllite in Quartz
Code: 4252
Astrophyllite in Quartz
The upper reaches of the Rov-river. Western Keivy, Kola Peninsula, RF
37*35*17mm

0.00 $ $16.00

Astrophyllite in Quartz
Code: 4253
Astrophyllite in Quartz
The upper reaches of the Rov-river. Western Keivy, Kola Peninsula, RF
29*21*16mm

0.00 $ $16.00

Astrophyllite
Code: 4087
Astrophyllite
Khibiny, Kola Peninsula, RF
83*44*22mm

0.00 $ $65.00

Astrophyllite
Code: 4088
Astrophyllite
Khibiny, Kola Peninsula, RF
59*39*19mm

0.00 $ $56.00

Astrophyllite in Quartz
Code: 4048
Astrophyllite in Quartz
The upper reaches of the Rov-river. Western Keivy, Kola Peninsula, RF
39*21*23mm

0.00 $ $16.00

Astrophyllite
Code: 3688
Astrophyllite
Khibiny, Kola Peninsula, RF
36*34*10mm

0.00 $ $21.67

Astrophyllite in Quartz archived
Code: 4047
Astrophyllite in Quartz
The upper reaches of the Rov-river. Western Keivy, Kola Peninsula, RF
33*27*16mm

0.00 $ $16.00

Astrophyllite in Quartz archived
Code: 4049
Astrophyllite in Quartz
The upper reaches of the Rov-river. Western Keivy, Kola Peninsula, RF
31*21*10mm

0.00 $ $16.00

Astrophyllite (UV) archived
Code: 3689
Astrophyllite (UV)
Khibiny, Kola Peninsula, RF
51*45*29mm

0.00 $ $40.00

Astrophyllite archived
Code: 3341
Astrophyllite
Khibiny, Kola Peninsula, RF
60*31*30mm

0.00 $ $56.00

Astrophyllite archived
Code: 1903
Astrophyllite
Khibiny, Kola Peninsula, RF
81*60*24mm

0.00 $ $55.00

Astrophyllite archived
Code: 1343
Astrophyllite
Khibiny, Kola Peninsula, RF
72*36*38mm

0.00 $ $78.33

Astrophyllite, Aegirine archived
Code: 2131
Astrophyllite, Aegirine
Kirovsky mine, Khibiny, Kola Peninsula, RF
55*38*11mm

0.00 $ $19.67

Astrophyllite, Aegirine, Calcite archived
Code: 2130
Astrophyllite, Aegirine, Calcite
Kirovsky mine, Khibiny, Kola Peninsula, RF
48*30*22mm

0.00 $ $30.00

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