PYRITE CALCITE QUARTZ
An outstanding mineral specimen featuring Pyrite Calcite Quartz crystals. The matrix consists of perfect Pyrite Cubes and thin terminated Quartz Crystals, very aesthetically covered in Calcite. Many of the striated pyrite cubes are clustered. Wow! This is a really super piece, one for the astute mineral collector. This specimen has been mounted on a perspex pad for enhanced display.
Borieva Mine, South Petrovitsa deposit, Madan, Bulgaria.
13cm x 6.4cm x 8.5cm, 569g.
Named in antiquity from the Greek “pyr” for “fire”, because sparks flew from it when hit with another mineral or metal (piezoelectricity).
The mineral pyrite, or iron pyrite, also known as fool’s gold, is an iron sulfide which has the chemical formula FeS2. This mineral’s metallic luster and pale brass yellow hue give it a superficial resemblance to gold.
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.
Quartz, Silicon Dioxide:
One of the most common minerals found in the Earth’s crust. If pure, quartz forms colourless, transparent and very hard crystals with a glass-like luster. Quartz is a significant component of many igneous, metamorphic and sedimentary rocks. Silicon dioxide is found in a wide range of varieties and colours. Quartz in its polished form, was the most advanced technology thousands of years ago.