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Gemstones, Minerals & Fossils
Gemstones and Minerals
❓Your Mineral Identification Questions answered here
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<blockquote data-quote="mbasko" data-source="post: 484876" data-attributes="member: 4485"><p>Did you try the SG with lower increment scales? Tourmaline SG is 2.8 to 3.3 so it's getting close?</p><p>Goldierocks - I did some research & found some suggestion that tourmaline is anisotropic or can display different properties (like hardness) in different directions? Not sure if this could be enough variance to allow quartz to scratch it one way?</p><p>Also if both are 7 mohs could quartz scratch it giving the impression its <7 but really 7 mohs too?</p><p>Not trying to make tourmaline the "winner" but anything else seems to far away in the SG, hardness etc. Maybe it is Zivianite"or "Ziviahuskite" <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="mbasko, post: 484876, member: 4485"] Did you try the SG with lower increment scales? Tourmaline SG is 2.8 to 3.3 so it's getting close? Goldierocks - I did some research & found some suggestion that tourmaline is anisotropic or can display different properties (like hardness) in different directions? Not sure if this could be enough variance to allow quartz to scratch it one way? Also if both are 7 mohs could quartz scratch it giving the impression its <7 but really 7 mohs too? Not trying to make tourmaline the "winner" but anything else seems to far away in the SG, hardness etc. Maybe it is Zivianite"or "Ziviahuskite" :) [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones and Minerals
❓Your Mineral Identification Questions answered here
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