Blue is open space filled with epoxy. These images are about 1 millimeter across.
A little pressure can crush these hollow crystals.
Or, calcite cement can fill the holes, which were calcite to begin with, before the dolomite crystals grew! (The calcite is stained red with a chemical that doesn't stain dolomite.)
Dolomite crystal molds actually play a significant role in moving oil or water here and there in the subsurface, but mostly they look cool.
No comments:
Post a Comment