INTERLOCKED PLASTER CRYSTALS, VERY GOOD QUALITY. TERMINATION IN PUNTA DE ARROW TYPICAL OF THIS AREA. VERY GOOD SAMPLE OF THIS MINERAL THAT CANNOT BE MISSING IN YOUR COLLECTION.
Gypsum is a mineral composed of calcium sulfate.
It is a sedimentary rock of chemical origin.
It is very common and can form sedimentary rocks.
The gypsum crystallizes into crystals with a prismatic, tabular and rhombic shape with beveled edges.
It occurs in crystals, sometimes large and pointed at the tip of an arrow or spearhead.
