[img]http://upload.wikimedia.org/wikipedia/commons/2/20/Galena,_Calcite,_Fluorite-274395.jpg[/img]
Rocks & Minerals B/C ID/Question Marathon
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Re: Rocks & Minerals B/C ID/Question Marathon
Assistant Coach of AHSO
Yale University '21
Yale University '21
- solakmagic
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Re: Rocks & Minerals B/C ID/Question Marathon
Wow, beautiful!sofossils wrote:[img]http://upload.wikimedia.org/wikipedia/commons/2/20/Galena,_Calcite,_Fluorite-274395.jpg[/img]
Galena, Fluorite, aaaaand Calcite
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Re: Rocks & Minerals B/C ID/Question Marathon
[img]https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcRjd-L39FsMVLPEpbkuKTwkBsi0lbcZvLqy1i4HGeJ36_YuzVRg[/img]
"Genius is one per cent inspiration, ninety nine per cent perspiration" - Thomas Alva Edison
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Re: Rocks & Minerals B/C ID/Question Marathon
Epidote or Apatite. The structure looks like apatite but the color (I know I know, we're not suppose to rely on this but...)
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Re: Rocks & Minerals B/C ID/Question Marathon
Apatite! I think that white scarring/ghosting/impurities/whatever you want to call it is really indicative of Apatite, though it can be confused with Sodalite. A good example of what I'm talking about is on this specimen [img]http://www.charmsoflight.com/Images/Gemstones/Apatite%20rough%20crystals.jpg[/img]
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Re: Rocks & Minerals B/C ID/Question Marathon
[img]http://skywalker.cochise.edu/wellerr/mineral/hematite/6hematite-sliman3431a.jpg[/img][img]http://rruff.info/repository/sample/by_minerals/Magnetite__R080025__Sample__Photo__22213__M.jpg[/img]
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Re: Rocks & Minerals B/C ID/Question Marathon
inluvwyth_WANTED wrote:[img]http://skywalker.cochise.edu/wellerr/mineral/hematite/6hematite-sliman3431a.jpg[/img][img]http://rruff.info/repository/sample/by_minerals/Magnetite__R080025__Sample__Photo__22213__M.jpg[/img]
Hematite, chem form Fe2O3
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Re: Rocks & Minerals B/C ID/Question Marathon
Hematite up top, Magnetite below! Hematite Fe2O3, Magnetite Fe3O4 or more specifically Fe(2+)2Fe(3+)O4
"Genius is one per cent inspiration, ninety nine per cent perspiration" - Thomas Alva Edison
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