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Madeiraite & Wöhlerite

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PAV950776

Madeiraite & Wöhlerite

New Mineral type

Description Tabs

Description
Locality: 
Terra do Baptista, Porto da Cruz, Machico, Madeira Islands, Portugal
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.7 × 1.6 cm
Description

Fantastic sample of madeiraite!

Two elongated crystals with epitaxial growth of wohlerite.

Zirconolite is also present as a group of reddish crystals.

Author's material (ex coll. Pedro Alves).

Collected: 
2020
Boxed with Label
Mineral Data
What's on the rock

Madeiraite

Formula: 
Na2Ca2Fe2Zr2(Si2O7)2O2F2
Crystal System: 
Monoclinic
Type Locality: 
Serrado Gabbro Outcrop, Porto da Cruz, Machico, Madeira Island, Madeira, Portugal Or Terra do Baptista Gabbro Outcrop, Porto da Cruz, Machico, Madeira Island, Madeira, Portugal...

Wöhlerite

Formula: 
NaCa2(Zr,Nb)(Si2O7)(O,OH,F)2
Strunz: 
9.BE.17
Hardness: 
5.5 - 6.0
Type Locality: 
Løvøya (Løvø; Lövö; Lövöe), Langesundsfjorden, Porsgrunn, Telemark, Norway