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Aragonite & Todorokite

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RPL1084918

Aragonite & Todorokite

Description Tabs

Description
Locality: 
Reedy Cliff, Port Quin, St Endellion, Cornwall, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
4 × 12 × 5.5 cm
Largest Crystal: 
0.40cm
Weight: 
269.00gr
Description

Acicular crystals of aragonite tightly grouped over a ridge of siderite matrix, revealing divergent growth, with brown todorokite.

Pale blue/white fluorescence and short-term phosphorescence under SW UV.

Unusual locality.

Condition
Main Display: 
Good - locality specimen
Mineral Data
What's on the rock

Aragonite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.15
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Type Locality: 
Gallo river, Molina de Aragón, Guadalajara, Castile-La Mancha, Spain

Todorokite

Formula: 
(Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)6O12·3H2O
Strunz: 
4.DK.10
Hardness: 
1.5
Type Locality: 
Todoroki mine, Yoichi, Shiribeshi Province, Hokkaido, Japan

Seller Information

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