 | | Book (edition) | | very old origin, often without lrnown source. e.g. quartz or cinnabar. Current practice most often names...polished mineral surface, expressed in clase. 7 - quartz. 8 - topaz, 9 - corundum, 10 - dia- percentage...dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....purine-porphyrine group). a nickel porphyrine. With quartz. rutile, piemontite, sursassite, ardennite, Triclinic...the Sailauf quarry, Spessart Mts., Bavaria. both Germany, and from the Rabejac deposit, Herault dept.. France |
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