stokesite

stokesite

[′stōk‚sīt]
(mineralogy)
CaSnSi3O9·2H2O A colorless orthorhombic mineral composed of hydrous calcium tin silicate occurring in crystals.
References in periodicals archive ?
Luiz Menezes (Rue Esmeralda, 534, Belo Horizonte 30410-080, Brazil) had the scoop on last October's new strike of stokesite at the Urucum mine, Galileia, Minas Gerais.
Jesuino Maciel 1358, Sao Paulo, Brazil) informed me that, yes, the Urucum mine is open and mining gems again: hence the new-improved stokesites, and hence too Edson's hundreds of thumbnails and miniatures of kunzite spodumene, in loose, typically etched crystals with rippled surfaces but total gemminess and a gorgeous lilac color.
Among the more exciting finds are boron-bearing chiavennite in sprays up to 1 cm (the third world occurrence), zoned genthelvite-helvite crystals, stokesite and wickmanite.