jcervay 35 Posted June 15 All 3 have the same dual color. Quartz? I'm really a rookie, not sure 1 Share this post Link to post Share on other sites
azdigger 1,062 Posted June 15 Not sure of what it is , but what it is , is cool looking. 1 Share this post Link to post Share on other sites
Saul R W 506 Posted June 15 Check the hardness, for starters. See here: https://geology.com/minerals/mohs-hardness-scale.shtml And yep, it is a cool looking piece. 1 Share this post Link to post Share on other sites
Morlock 647 Posted June 15 Citrine is quartz that has small quantities of iron in it. You have a light yellow and brown layers. Those are citrine..You also have a gray layer which I'm not sure of. 1 Share this post Link to post Share on other sites
jcervay 35 Posted June 15 55 minutes ago, Saul R W said: Check the hardness, for starters. See here: https://geology.com/minerals/mohs-hardness-scale.shtml And yep, it is a cool looking piece. Great idea! I'll do that Share this post Link to post Share on other sites
jcervay 35 Posted June 15 Doesn't scratch glass, obviously scratched by quartz. Reacts to vinegar. Not citrine I don't think. Calcite? Thoughts? 1 Share this post Link to post Share on other sites
d_day 104 Posted June 15 (edited) I'm going to say calcite and aragonite. In fact, I'm going to get a little more specific and say you've probably got some fragments from a septarian nodule, like this one. Edited June 15 by d_day 1 Share this post Link to post Share on other sites
jcervay 35 Posted June 15 36 minutes ago, d_day said: I'm going to say calcite and aragonite. In fact, I'm going to get a little more specific and say you've probably got some fragments from a septarian nodule, like this one. I was just starting to think the Sam thing. Not the nodule bit, but it makes me extremely sad that if it was, it's broken 1 Share this post Link to post Share on other sites
