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Allanite-(Ce) Grossular & Diopside

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PJM40835

Allanite-(Ce) Grossular & Diopside

Description Tabs

Description
Locality: 
Mary Kathleen Mine, Rosebud Station, Cloncurry Shire, Queensland, Australia
Size Range: 
Cabinet (10-18 cm)
Size: 
3.5 × 10.4 × 6.3 cm
Description

A matrix coated with a thick bed of green fibrous diopside and brown grossular crystals provides a base for dozens of allanite ce crystals to 1.2cm.

The allanite are black with a resinous luster

Mineral Data
What's on the rock

Allanite-(Ce)

Formula: 
{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Type Locality: 
Qáqarssuatsiaq, Aluk Island, Kap Farvel, Kujalleq, Greenland

Grossular

Formula: 
Ca3Al2(SiO4)3
Strunz: 
9.AD.25
Hardness: 
6.5 - 7.0
Type Locality: 
Akhtaragda River mouth (Achtaragda River mouth), Vilyui River Basin (Vilui River Basin; Wilui River Basin), Sakha Republic (Saha Republic; Yakutia), Eastern-Siberian Region, Russia

Diopside

Formula: 
CaMgSi2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.15
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.5
Streak: 
white
Earthstones Australia

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