 | | Book | | Mineralogy of Michigan by E. W. Heinrich updated and revised • by George W. Robinson M By E W~ Hellnr]ch...Museum Michigan Technological University Houghton, Michigan 49931 2004 © MINERALOGY OF MICHIGAN 3 FOREWORD...FOREWORD Michigan has a long and varied geologic history that includes repeated episodes of volcanism...before the first Europeans set foot here. When Michigan became a state in 1837, one of the first actions...and we continue to learn more about them today. Michigan minerals helped to build the state and nation |  | | Book (edition) | | Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...more structural sites, e.g. jahnsite(~fa). jahn ite-(Ca.\1nMn). etc. Other examples are pump~U);te-(Fe:,...or numerous zeolites. e.g. gmelinite- a. gmelinite-Ca, etc. For the fonnerly used prefixes such as Greek...both enclosed in square brackets, e.g. fluorapatite Ca[Fl(PO 4)3] or euchroite 0.1 2[OHIAsO 4]•3H 2O. This...common are malleable (e.g gold). ductile (e.g. copper). sectile (e.g. chalcocite). elastic Optical co11sta11ts |  | | Book | | Heulandite, Clinoptilolite .................. Stilbite, Stellerite, Barrerite . . . . . . . . . . . ...balanced by the extraframework cations, usually K, Na, Ca, less frequently Li, Mg, Sr, Ba. In synthetic zeolites...formula for natural zeolites is hence (Li, Na, K)a(Mg, Ca, Sr, Ba)d[Al(a+2d)Si n-(a+2d)02n] . mH 20 where... EOlo = (AI+Fe)-(Li+Na+K)-2(Mg+Ca+Sr+Ba) (Li + Na+ K) + 2(Mg+ Ca+ Sr+ Ba) X 100 is 0 in a "perfect"...in the tetrahedron because Li is normally absent, Ca normally prevails by far over the other divalent |
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