 | | Journal (article/letter/editorial) | | Dezember 2001 The origin of colour of chrysoprase from Szklary (Poland) and Sarykul Boldy (Kazakhstan) Micha...M. (2001): The origin of colour of chrysoprase from Szklary (Poland) and Sarykul Boldy (Kazakhstan). –...Abstract: Samples of chrysoprase from the chrysoprase “type” locality in Szklary, Poland and from Sarykul...colour. The allochromatic “apple-green” colour of chrysoprase results from nanometer-size inclusions of aggregates...inclusions containing Fe3 + ions modify the chrysoprase green colour by adding yellowish hue. The bluish |  | El Mendili, Yassine, Orberger, Beate, Chateigner, Daniel, Bardeau, Jean-François, Gascoin, Stéphanie, Petit, Sébastien, Perez, Olivier (2022) Occurrence of SiC and Diamond Polytypes, Chromite and Uranophane in Breccia from Nickel Laterites (New Caledonia): Combined Analyses. Minerals, 12 (2) 196 doi:10.3390/min12020196 | Journal (article/letter/editorial) | | core of nickel laterites in New Caledonia (Tiebaghi mine). XRD analyses show quartz as a major phase. Micro-Raman...lizardite, chrysotile, forsterite, hedenbergite and saponite. The veins cutting through the breccia are filled...attributed to ultrahigh-pressure crystallization in the lower mantle. The SiC and diamond polytypes are inherited...attributed to a three-stage process: formation in the lower mantle, transport into the upper mantle peridotite...laterite profile, located in saprolite, at the Tiebaghi mine, New Caledonia. The silica rich rocks (sample ER-NC00-0001) |
|
