MANGANO CALCITE LARGE FLUORESCENT CLUSTER
Introducing a beautiful Pink Mangano Calcite Large Fluorescent Cluster of Crystals. This specimen is a lovely pale pink in daylight and as you can see, pink fluorescing under UV light. This is a quality calcite crystal specimen showing a form of cubic crystals. Some pics taken with Filtered Longwave torch, some were taken outside and some inside.
10.6cm x 14.5cm x 5.5cm, 764g.
CaCO3, Calcium Carbonate.
Calcite name is from chalix the Greek word for lime. This is a most amazing yet, common mineral. Comprising about 4% by weight of the Earth’s crust and formed in many different geological environments. Calcite can form rocks of considerable mass and constitutes a significant part of all three major rock classification types. It forms oolitic, fossiliferous and massive limestones in sedimentary environments. Calcite serves as the cements for many sandstones and shales. Limestone becomes marble from the heat and pressure of metamorphic events. Calcite is a major component in carbonatite and forms the major portion of many hydrothermal veins.
Calcite is so abundant and widely distributed it is no wonder that it can be so varied. The crystals of calcite can form literally a thousand different shapes. By combining the basic forms of the positive rhombohedron, negative rhombohedron, steeply, moderately and slightly inclined rhombohedrons, various scalahedrons, prism and pinacoid to name a few of the more common forms. There are more than 300 crystal forms identified in calcite. Calcite also produces many twin varieties, they are favorites among twin collectors. There are also phantoms, included crystals, color varieties, pseudomorphs and unique associations. There simply is no end to the varieties of calcite. Red and pink fluorescent Calcites are often activated by a team of lead and manganese.
Check out Fluorescent Mineral Society for more on Fluorescence.
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