Blooming Peony Shape White ARAGONITE Cluster

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Blooming Peony Shape White ARAGONITE Cluster Description Dimension 30mmX70mmX40mm Weight 95g Collected from Hubei Province, China Mineral Instruction Aragonite is a common carbonate mineral. It is unfortunately often thought of as the poor cousin to calcite. But aragonite is an interesting and attractive mineral in its own right. It forms interesting habits and can have a soft pretty color. Its modes of formation and relationship to calcite are both curious and intriguing.Aragonite is a polymorph of calcite, which means that it has the same chemistry as calcite but it has a different structure, and more importantly, different symmetry and crystal shapes. Aragonite's more compact structure is composed of triangular carbonate ion groups (CO3), with a carbon at the center of the triangle and the three oxygens at each corner. Unlike in calcite, the carbonate ions do not lie in a single plane pointing in the same direction. Instead they lie in two planes that point in opposite directions; destroying the trigonal symmetry that is characteristic of calcite's structure. Shipping & Handing Shipping Method Global Airmail Shipping and handing fee US $11 ( including professional packing) Shipping Time 10-30 days Discount Description We ship to worldwide,and offer Combine Shipping if customers purchase more than two items within 14 days, read more