Cordierite

Specimen ID: 81Q-QR8

Mineral(s)
Cordierite : (Mg,Fe)2Al3(AlSi5O18)
Locality
As recorded:
Belemboky mine,Tsiombe,Tulear Province,Madagascar
Dimensions
1mm x 1mm x 1mm
Description
Polished cube of gemmy cordierite, pleochroic (the color changes depending on the crystals optic axis - from one site it is bluish from another angle - yellow/colorless). Much better in person.
Previous data
Mineral(s)
Name withheld

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4,501,163 minIDs have been issued as of 17th Jun 2019 10:15 pm BST