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Pyrite is used as an iron ore where iron oxide ores are not available
Monastery Beach
apparently hydrothermally altered volcanic ash
This is a rare and still very useful entomological reference
These were sent to subscribers in parts
asbestos - tremolite (amphibole) asbestos - teaching hand specimen of fibers in a screw-cap pyrex tube Pyrite is used as anAsbestiform tremolite from the McIlroy Mine, Inyo County, California. Tremolite is a calcic amphibole which forms a solution series with actinolite and ferro actinolite. The ideal formula is Ca2Mg5Si8O22(OH)2 . Tremolite asbestos is fairly uncommon, and most of the tremolite asbestos mined in the US, including from this mine, went to the Powhatan Mining Company in Woodlawn, MD, for the manufacture of the filter used in Gooch crucibles. These
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