Search results with tag "Labradorite"
Les minéraux et les roches
mern.gouv.qc.caCristal de labradorite 4 faces latérales de parallélogramme 2 bases losangiques Structure cristalline de la labradorite (CaAl 2Si 2O 8) Système cristallin Généralement, lorsque les cristaux se développent sans contrainte dans la nature ils vont prendre la
SUNSTONE LABRADORITE FROM THE PONDEROSA MINE …
www.desertsungems.comTo date, 400 kg of gem-quality rough sunstone have been removed from the Ponderosa mine, 140 kg in 1991 alone. As a result, Ponderosa mine sunstone – in a variety of colors – has begun to find its way into the general gem and jewelry market (figures 1 and 2). Figure 1. Gem-quality sunstone labradorite occurs at the Ponderosa mine,
Identification Tables for Common Minerals in Thin Section
funnel.sfsu.edulabradorite (plagioclase) IM colourless 1.55-1.57 low + 28-39 (Michel-Levy) 70-90, -ve or +ve low : up to white Albite twins along length, also Carlsbad + others In igneous rocks often with clinopyroxene and or olivine. Also in high-grade meta rocks. Crystals in igneous rocks often rectangular laths. Often zoned:
Tumbled Gemstone Identification Chart Provided by …
rocktumbler.comLabradorite Lapis LazuliLake Superior Leopard Skin Lepidolite Lilac Amethyst Lionskin Mahogany Obsidian Malachite ... Botswana Pink Opal Polychrome Prehnite Rain Forest Rhyolite Red Jasper Red Tiger Eye Rhodonite SunstoneRose Quartz Ruby in Zoisite Rutilated Quartz Serpentine Snowflake Obsidian Sodalite Tree Agate Quartz Turritella Agate ...
GEMS AND GEM MINERALS OF NORTH CAROLINA*
www.minsocam.orgLabradorite Zicon Hyacinth Cyanite Blue Green Spinel Ruby Grahnite Zoisite' Thulite Olivine Peridot Epidote Iolite Serpentine ... clase (sunstone), microcline (amazonstone), quartz, garnet (esson-ite, rhodolite and almandite), gahnite (a green spinel), rutile, cyanite, and zoisite (thulite).