Calcite and Halite Mineral Specimen - New Mexico ~ 12.9 oz size They are distinguishable by taste, with halite being salty and calcite tasteless, and by acid reaction, where calcite fizzes in dilute acid while halite does not. Physically, halite forms perfect cubes, whereas calcite typically forms rhombohedrons. Calcite is slightly harder (3 on the Mohs scale) than halite (2.5), and halite dissolves readily in water, while calcite does not. ** WE HAVE MANY BEAUTIFUL MINERAL SPECIMENS FROM THE USA AROUND THE GLOBE ** MOST ARE FROM OUR VARIOUS TRIPS ** ** SEE ENTIRE STORE FOR AMAZING MINERALS ** ** OUR GOAL IS TO MAKE COLLECTING FUN AFFORDABLE FOR ALL WITH GREAT LOW PRICING * # 435