Calcite

=**__Calcite__**= Uses: Calcite has more uses than almost any other mineral. Moat is used as a construction material in the form of cement,concrete, dimension stone of aggregate. In agriculture it is used as a soil treatment to neutralize acids and as a filler or dietary supplement in livestock feeds. It is used in many medications,particularly those that treat excess stomach acids.

  Chemical formula: caCO3 Composition: Molecular Weight = 100.09gm __calcium__ 40.04 Ca 56.03 CO __Carbon__ 12.00 C 43.97 CO2 __Oxygen__ 47.96 O Empirical formula (CO3) Environment: Found in sedimentary,igneous, and metamorphic rocks. Name origin: From the Latin,Calx,meaning lime

Cleavage:[1011] Perfect, [1011] Perfect, [1011] Perfect Color: Colorless,white,pink,yellow,brown Density: 2.71 Diaphaniety: Transparent to transluent to opaque Fracture: Brittle-conchoidal-very brittle fracture producing small,conchoidal fragments Hardness 3-Calcite Luminescence:Fluorescent Luster:Vitreous (Glassy) Streak: White

__5 interesting facts about Mineral:__ 1. A very common and widespread mineral with highly variable forms and colours. 2. It is best recognized by its relatively low hardness (H=3) 3. Its high reactivity with even weak acids, such as vinegar, plus its prominent cleavage in most varieties. 4. It is most common as massive material in limestones and marbles. 5. It forms as chemical sedimentary deposits as limestone, can be regionally or contact metamorphosed into marbles and rarely forms igneous rocks.

__5 places that this can be found:__ 1. www.mineral.galleries.com 2. www.webmineral.com 3. www.mindat.org 4. www.minerals.net 5.www.geology.com/minerals/calcite.