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Gemstones, Minerals & Fossils
Gemstones and Minerals
any ideas on wat this is green obsidian or something else
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<blockquote data-quote="shivan" data-source="post: 321300" data-attributes="member: 194"><p>It seems garnets are very common up that way, but the way you mention black obsidian with green and red pieces makes me wonder if it could be spinel. Could you post a picture with all the different bits of what you are calling obsidian with them front lit instead of the back light?</p><p></p><p>Here is a piece of green obsidian i have though it has a lot of inclusions.</p><p><a href="http://s1381.photobucket.com/user/iburchel/media/Rocks/IMG_1322_zpstehjsfkg.jpg.html" target="_blank"><img src="http://i1381.photobucket.com/albums/ah221/iburchel/Rocks/IMG_1322_zpstehjsfkg.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p><a href="http://s1381.photobucket.com/user/iburchel/media/Rocks/IMG_1318_zpsdhmiwg03.jpg.html" target="_blank"><img src="http://i1381.photobucket.com/albums/ah221/iburchel/Rocks/IMG_1318_zpsdhmiwg03.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p></p><p>Conchoidal fracturing is one of the best tells for obsidian (scallop shape like fractures).</p><p><a href="http://s1381.photobucket.com/user/iburchel/media/Rocks/IMG_1324_zpsqzvgtzfc.jpg.html" target="_blank"><img src="http://i1381.photobucket.com/albums/ah221/iburchel/Rocks/IMG_1324_zpsqzvgtzfc.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p></blockquote><p></p>
[QUOTE="shivan, post: 321300, member: 194"] It seems garnets are very common up that way, but the way you mention black obsidian with green and red pieces makes me wonder if it could be spinel. Could you post a picture with all the different bits of what you are calling obsidian with them front lit instead of the back light? Here is a piece of green obsidian i have though it has a lot of inclusions. [url=http://s1381.photobucket.com/user/iburchel/media/Rocks/IMG_1322_zpstehjsfkg.jpg.html][img]http://i1381.photobucket.com/albums/ah221/iburchel/Rocks/IMG_1322_zpstehjsfkg.jpg[/img][/url] [url=http://s1381.photobucket.com/user/iburchel/media/Rocks/IMG_1318_zpsdhmiwg03.jpg.html][img]http://i1381.photobucket.com/albums/ah221/iburchel/Rocks/IMG_1318_zpsdhmiwg03.jpg[/img][/url] Conchoidal fracturing is one of the best tells for obsidian (scallop shape like fractures). [url=http://s1381.photobucket.com/user/iburchel/media/Rocks/IMG_1324_zpsqzvgtzfc.jpg.html][img]http://i1381.photobucket.com/albums/ah221/iburchel/Rocks/IMG_1324_zpsqzvgtzfc.jpg[/img][/url] [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones and Minerals
any ideas on wat this is green obsidian or something else
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