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<p>[QUOTE=&quot;aaroncab, post: 9490932, member: 3974&quot;]Yes - fluorite often will fluoresce&nbsp; some shade of some color - but I don&#039;t think it&#039;s a 100% sure test as some fluorite does not according to what I&#039;ve read. Have you tried scratching the specimen with your fingernail, or with a steel nail or knife blade? Before doing the scratch test you could do the vinegar/acid test - drop a small drop of vinegar on the rock - if it fizzes (might fizz very slowly over a number of seconds) then it is calcite. If no fizz - we can pretty much rule out calcite.[/QUOTE]</p><p><br /></p>

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