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Lun'okite & Vivianite

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CHP916228

Lun'okite & Vivianite

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Description
Locality: 
Sítio do Castelo Mine, Folgosinho, Gouveia, Guarda District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.7 × 1.5 cm
Description

specimen with some beautiful groups of yellow crystals of the rare lun'okite with some bluish crystal of vivianite.

c. 4491

Mineral Data
What's on the rock

Lun'okite

Formula: 
(Mn,Ca)(Mg,Fe,Mn)Al(PO4)2OH·4H2O
Crystal System: 
Orthorhombic
Hardness: 
3.0 - 4.0
Streak: 
White
Type Locality: 
Voron'i Tundry, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Vivianite

Formula: 
Fe2+3(PO4)2·8H2O
Strunz: 
8.CE.40
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0
Type Locality: 
Wheal Kind (Wheal Kine), West Wheal Kitty group, St Agnes, St Agnes District, Cornwall, England, UK

Seller Information

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