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This Specimen has been sold.
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3.95" Polished Viridine in Alurgite Slab - Sweden
This is a gorgeous new offering from northern Europe: a 3.95-inch slab of bright green viridine crystals in shimmering pinkish alurgite and quartz. Both sides have been polished to better reveal the numerous streaks, clusters, and lines of material. It comes attached into a custom wooden stand.
Viridine is a green, manganese-bearing variety of andalusite.
Andalusite is a common metamorphic aluminum mesosilicate mineral, used along with its polymorphs kyanite and sillimanite (fibrolite) to determine temperature-pressure paths in metamorphic host rocks. The first specimens of andalusite were named in 1798 by Jean-Claude Delamétherie, and believed to be from the southernmost state of Andalusia. However, the specimens were actually from the town of El Cardoso, in the Guadalajara region in central Spain: Delamétherie supposedly thought the town was in Andalusia.
Gem-quality specimens of andalusite can display pleochroism, a phenomenon where minerals show different colors from different viewing angles, especially with polarized light.
Andalusite is a common metamorphic aluminum mesosilicate mineral, used along with its polymorphs kyanite and sillimanite (fibrolite) to determine temperature-pressure paths in metamorphic host rocks. The first specimens of andalusite were named in 1798 by Jean-Claude Delamétherie, and believed to be from the southernmost state of Andalusia. However, the specimens were actually from the town of El Cardoso, in the Guadalajara region in central Spain: Delamétherie supposedly thought the town was in Andalusia.
Gem-quality specimens of andalusite can display pleochroism, a phenomenon where minerals show different colors from different viewing angles, especially with polarized light.
SPECIES
Andalusite var. Viridine, Muscovite var. Alurgite & Quartz
LOCATION
Revahalle, Näsum, Bromölla, Skåne County, Sweden
SIZE
3.95 x 3.2", 4.5" tall on stand
CATEGORY
ITEM
#269125
