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Ilmenite, Schorl, Hematite, Rutile, Anatase


Ilmenite : Fe2+TiO3, Schorl : [Na][Fe2+3][Al6][(OH)3|OH|(BO3)3|Si6O18], Hematite : Fe2O3, Rutile : TiO2, Anatase : TiO2

Photo Copyright © Philippe M. Belley  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Schorl and Ilmenite occurrence, Highway 5 extension, Chelsea, Les Collines-de-l'Outaouais RCM, Outaouais, Québec, Canada
Section of a 19 cm specimen. Left: unaltered ilmenite crystals to 13 mm, center: altered crystals to grey mixture (hematite, rutile, anatase), lower mid-right: small crystals with 'leucoxene' replacement. These tan crystals are mostly composed of anatase and rutile. See other photo for a close-up of these crystals. Prep: Calcite removed with HCl.

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