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Feldspar Feldspar refers to a group of minerals containing aluminum and silica. They all show good cleavage in two directions at about 90 degrees.
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Oriental Journal of Chemistry is a peer reviewed quarterly research journal of pure and applied chemistry. It publishes standard research papers in almost all thrust ...
Raw Materials Dictionary / Ceramic Pottery Glaze making, Clay Ingredients
The term Epoque de St Acheul was introduced by Gabriel de Mortillet in 1872 and is still used occasionally, but after 1925 the idea of epochs began to be supplanted ...
Metaphysical & Healing Properties of Gems, Minerals, & Crystals ~ Over 300 Species Are Included ~ Regularly Updated List
2007 Research Publications. 2007 Research Publications are listed alphabetically by section name below. Please note that copies of these publications are not held ...
A concretion is a hard, compact mass of matter formed by the precipitation of mineral cement within the spaces between particles, and is found in sedimentary rock or ...
ABOUT THE INDEX. The IRUG Spectra Database Index lists all spectra in the database. The index sequence defaults to IRUG Filename order. Click on column headers to ...
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Limonite is extremely common and found worldwide. Excellent iridescent botryoidal masses have recently been found in China at Nandan, Guangxi Province, and at ...
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