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  2. Collectible minerals
  3. Pectolite

Collectible minerals - full range in stock "Pectolite"

Pectolite is a mineral that forms tabular and acicular crystals, as well as radial-fibrous, columnar, spherulitic aggregates and massive formations. It occurs in nepheline syenites, in hydrothermal cavities of basalts and diabases, and in calcium-rich metamorphic rocks.

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

Physical properties of Pectolite

General
Category Inosilicate mineral
Formula
(repeating unit)		 NaCa2Si3O8(OH)
IMA symbol Pct
Crystal system Triclinic
Crystal class Pinacoidal (1)
(same H-M symbol)
Space group P1
Unit cell a = 7.99 Å, b = 7.03 Å,
c = 7.03 Å; α = 90.51°,
β = 95.21°, γ = 102.53°; Z = 2
Identification
Color Colorless, whitish, grayish, yellowish
Crystal habit Tabular to acicular, radiating fibrous, spheroidal, or columnar; massive
Twinning Twin axis [010] with composition plane [100], common
Cleavage Perfect on {100} and {001}
Fracture Uneven
Tenacity Brittle; tough when compact
Mohs scale hardness 4.5 - 5
Luster Silky, subvitreous
Streak White
Diaphaneity Translucent to opaque
Specific gravity 2.84 - 2.90
Optical properties Biaxial (+)
Refractive index nα = 1.594 - 1.610 nβ = 1.603 - 1.614 nγ = 1.631 - 1.642
Birefringence δ = 0.037
2V angle Measured: 50° to 63°, Calculated: 42° to 60°
Dispersion r > v weak to very strong
Pectolite (UV)
Code: 4312
Pectolite (UV)
Kukisvumchorr, Khibiny, Kola Peninsula, RF
68*40*34mm

0.00 $ $40.00

Pectolite (UV)
Code: 2687
Pectolite (UV)
Kukisvumchorr, Khibiny, Kola Peninsula, RF
75*32*31mm

0.00 $ $39.00

Pectolite archived
Code: 1476
Pectolite
Kukisvumchorr, Khibiny, Kola Peninsula, RF
67*47*32mm

0.00 $ $46.67

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