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Armalcolite

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DLN116628

Armalcolite

Rare Mineral

Description Tabs

Description
Locality: 
La Aljorra Quarries, La Aljorra, Cartagena, Murcia, Spain
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1 × 1 cm
Description

Nice sample of this curious mineral (tabular dark brown crystals) that has its type locality in the Moon !!. The name is from ARMstrong, ALdrin and COLlins the first men who traveled to the moon in 1969 (incidentally three months ago, August 25, Armstrong has dead !) . More precisely, the mineral belongs to the armalcolite-pseudobrookite series. Associated mineral in the sample is enstatite in light brown arrowed crystals.
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Mineral Data
What's on the rock

Armalcolite

Formula: 
(Mg,Fe2+)Ti2O5
Strunz: 
4.CB.15
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 0.0
Colour: 
Grey
Type Locality: 
Tranquillity Base (Apollo 11 landing site), Mare Tranquillitatis (Sea of Tranquility), The Moon
DLN Minerals

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