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Lanthanite-(La) & Allanite-(Ce)

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RMM103274

Lanthanite-(La) & Allanite-(Ce)

Radioactive

Description Tabs

Description
Locality: 
Tripp Mine, Cardiff Township, Haliburton County, Ontario, Canada
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 3 × 2.3 cm
Description

White lanthanite-La micro-crystals form a crust over mildly radioactive massive allanite-(Ce). Crystals of hydroxylbastnäsite-(La) are possibly present. These species were confirmed by Pavel Kartashov. See http://www.mindat.org/photo-436217.html and http://www.mindat.org/photo-436215.html

Mineral Data
What's on the rock

Lanthanite-(La)

Formula: 
(La,Ce)2(CO3)3·8H2O
Strunz: 
5.CC.25
Crystal System: 
Orthorhombic
Hardness: 
2.5 - 3.0
Streak: 
White
Type Locality: 
Bastnäs mines, Riddarhyttan, Skinnskatteberg, Västmanland, Sweden

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

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