$150Median
113Sold (12 mo)
$100Last sale
Muscovite from Ilha claim, Taquaral, Itinga, Minas Gerais, Brazil
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Ships from USA
Choice example for the species with lustrous slightly translucent brown crystals to 0.4 cm in height aesthetically arranged across the front of matrix with crystallized muscovite. In good condition. The specimen comes with a previous label from the collection of Ray DeMark.The Ilha claim, also known as Lavra da Ilha, is a zoned granitic pegmatite situated on a small island within the Jequitinhonha River near Taquaral and Itinga in Minas Gerais, Brazil. Discovered in 1969, mining operations at the site were strictly seasonal, restricted to the dry months when low river levels allowed miners to clear sand and access the pit before annual floods submerged the workings. The deposit eventually became inactive and is currently classified as an inactive claim. Geologically, the pegmatite is enclosed in quartzose mica schist and features distinct internal zones of muscovite and feldspar flanking a central quartz core, along with sodic replacement bodies and small vugs that produced world-famous specimens of crystallized rose quartz and rare phosphate minerals.
Product details
SpeciesMuscoviteEosphorite
SizeMiniature
Dimensions4.5 x 3.5 x 2.0 cm
Listed on10/07/2026
LocalityBrazil, Minas Gerais, Ilha claim
SKU2063049
Current owner
WM
Weinrich MineralsFeatured
3,462 for sale·9 sold
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Mineral guide
Learn about Muscovite
classic white mica with perfect basal cleavage and pearly luster; elegant rosettes and sheets, with rare, high‑quality pieces for collectors.Regional guide
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