Search Archived Mineral Specimens
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Aldeia do Eme mine, Conselheiro Pena, Minas Gerais, Brazil
- Formula
- KAl2(Si3Al)O10(OH)2
- Size
- SmCabinet 8x4.5x4.5cm
An excllent cluster of pseudohexagonal crystals to 4.5cm across.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Lemnäs, Kemiö Island, Finland
- Formula
- KAl2(Si3Al)O10(OH)2
- Size
- SmCabinet 6x5x6cm
- Tagged
- pegmatite mineral
This is a weird one, one of which had been described in the old literature as "gigantolite" in reference to it huge, gigantic crystals once though to be a unique mineral. Later studies proved it to be only a mixture of micas. The old Excalibur and Heinrich label indicates that it is a variety of topaz, which evidently it is not.
- Availability
- Sold
- Locality
- Cornwall, England
- Formula
- KAl2(Si3Al)O10(OH)2
- Size
- Thumbnail 2.5x2.5x1cm
A 2.5cm group of star-like (stellate), crystallized Muscovite.
- Availability
- Sold
- Locality
- Minas Gerais, Brazil
- Formula
- KAl2(Si3Al)O10(OH)2
- Size
- Cabinet 10x7x4.5cm
It is as red as the photos show. The specimen has front and back coverage.
