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

Collectible minerals - full range in stock "Pyrochlore"

Pyrochlore is a relatively rare mineral, and since 2010 it has been a group and supergroup of minerals. Pyrochlor is tantaloniobate and is used to produce niobium and tantalum.

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

Physical properties of Pyrochlore

General
Category Oxide mineral
Formula
(repeating unit)
(Na,Ca)2Nb2O6(OH,F)
IMA symbol Pcl
Strunz classification 4.DH.15
Dana classification 08.02.01.01
Pyrochlore group
Crystal system Isometric
Crystal class Hexoctahedral (m3m)
H-M symbol: (4/m 3 2/m)
Space group Fd3m (No. 227)
Unit cell a = 10.41(6) Å, Z = 8
Identification
Color Black to brown, chocolate-brown, reddish brown, amber-orange, red-orange
Crystal habit Typically octahedra, disseminated granular, massive
Twinning 111 rare
Cleavage 111 indistinct, may be a parting.
Fracture Subconchoidal to uneven, splintery
Tenacity Brittle
Mohs scale hardness 5.0–5.5
Luster Vitreous to resinous
Streak White
Diaphaneity Subtranslucent to opaque
Specific gravity 4.45 to 4.90
Optical properties Isotropic, weak anomalous anisotropism
Refractive index n = 1.9–2.2
Other characteristics Radioactive.svg Radioactive, often metamict

Code: 1651
Cherry mountains, dump of ore zone 140. Southern Urals, RF
84*64*33mm

0.00 $ $58.18

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