Joined: Wed Mar 28, 2007 12:35 am Posts: 44 Location: Nepal
A rough stone was brought to me for identification .I verified the stone as calcite on the basis of these results.
colour milky white,clarity translucent,hardness 3.5,SG 2.8,when i put some acid on the surface of the rough , i noticed gass bubbles were coming out from the rough. So i concluded it to be belonging to the calcite group.
One interesting thing regarding this stone is that it glows brightly in the dark.
So i want your opinions upon this stone,does a calcite glow in the dark.
Here is the image
Joined: Wed Nov 23, 2005 12:47 pm Posts: 2511 Location: Eastern Europe
That's one boulder to keep next to a sunny window... and the freak out when it glows back at you t sundown!
Sounds like phosphorescence. Calcite is notorious... even used as physiological marker because of it. There are several sources with such properties, I do not know the list by heart... Canada is in for sure.
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