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UM2003-34-SiO:CaFFeMnNaNbTiZr

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CHP1040397

UM2003-34-SiO:CaFFeMnNaNbTiZr

Classic Locality

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Description
Locality: 
Água de Pau Volcano, São Miguel Island, Azores District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2.6 × 2 cm
Description

specimen with an excellent beautiful yellow-brownish group of prismatic crystals and a single clear crystal of UM2023-34-SiO,CaFFeMnNaNbTiZr on matrix. the mineral is analysed and result the second locality for the Madeiraite: the crystals of this locality are the best of the species.

analisys: The PXRD is consistent with a wöhlerite-group mineral. The EDS composition fits madeiraite with Fe > Mn, although the Mn is higher than that in type madeiraite.

c. 8009

Mineral Data
What's on the rock

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400
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Start 14 Apr 18:00
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