Helvite with Microcline - image 1
Helvite with Microcline - image 2
specimen video

Helvite with Microcline

Unknown Owner
A fine example for the species with very sharp crystals of helvite measuring to 0.5 cm in size across a crystallized white microcline matrix. Muscovite is present as well. The helvite crystals are brightly fluorescent red under longwave ultraviolet light.

Product details

Species
Microcline, HelviteAbout Microcline →
SizeCabinet
Dimensions11.5 x 6.0 x 4.5 cm
Added on07/18/2025
Locality
Brazil, Minas Gerais, São Geraldo do Baixio

Known provenance

DateCollectorAcquisition price
07/2025Unknown Owner$280.00
—Weinrich MineralsNot disclosed

Learn more

Mineral guide
Learn about Microcline
classic potassium feldspar with blocky crystals, dramatic twinning (Carlsbad, Manebach) and the vivid amazonite variety, a top Pikes Peak gem.
Regional guide
Microcline from São Geraldo do Baixio
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