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Post by tntmom on Jun 13, 2011 13:19:38 GMT -5
Puget Sound San Juan Island beach finds over the weekend. This is so beautiful but I have no idea what this crystallized specimen is. Close ups: This one I think is Unakite as it is at a beach that I have found a lot of unakite at. This one is nice though because the pink is super pink, not typical rosey. If it is something else could you please educate me? (this photo taken wet) And lastly, this is just a pretty little heart (Ed...this one's for you..."mostly" ;D)! Thank you! ~Krystee
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,466
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Post by Sabre52 on Jun 13, 2011 23:02:25 GMT -5
First one looks to be gypsum (only a guess not knowing hardness) . If it wasn't from a unakite location, I'd think the second one is thulite as a lot of the California and Wyoming stuff looks very much like that.....Mel
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Post by tntmom on Jun 14, 2011 0:28:15 GMT -5
Mel, Thank you!! Gypsum...hmmmm...that makes me think of drywall. How should I test the hardness??? #2, I do have a piece of Thulite (I think) that is mixed with black. The pink is identicle. However.... what about the green? Here is the Thulite that I "think" I have: And here is the polished Unakite found on the same beach as the stone in question: Here is the stone again for comparison: I think your ID looks spot on, however... I googled it and read that it has been found in Eastern WA but not Western WA, where I am. Do you think it could have made it this far over? ~Krystee
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Post by tandl on Jun 14, 2011 8:34:29 GMT -5
Thulite is pink zoisite . transluscent pink thulite is said to fluoresce. Zoisite is a metamorphic mineral found mixed with tremolite,wollastonite in hornfels.Unakite is a igneous rock (granite) is orthoclase,quartz and epidote . your rock looks to me to be zoisite . Also wollastonite, is fluorescent, that could be the white mineral in your rock , the green -tremolite .
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,685
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Post by Fossilman on Jun 14, 2011 10:22:46 GMT -5
1st one could be Calcite too........(Just a guess),its on a scale of 3 to 4,not very stable.Will shamble in the hot weather if left outside........ I have a few pieces about that size I found in Montana,near Glendive...Either way its nice,so are the others you found...........
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,466
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Post by Sabre52 on Jun 14, 2011 15:21:46 GMT -5
Krystee: Gypsum has a mohs hardness of only two so should scratch with a fingernail ( mohs 2.5). It could be calcite or even pale barite too. Barite is monster heavy, calicite is harder than gypsum, about mohs 3 and should scratch with copper which is mohs 3.5 or so. Your pink and black specimen looks more like rhodonite to me....Mel
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Post by tntmom on Jun 14, 2011 16:47:49 GMT -5
Ted, Fossilman and Mel,
Gypsum it must be! Yes I am able to scratch it with my fingernail and it is not heavy. The Thulite sounds pretty cool, I will have to dig around and find my black light to see if it fluoresces. And.... rhodonite? I am off to label these now so I don't forget the names!
Thank you all so much! The mass amount of knowledge on this site always amazes me!!!
~Krystee
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