Danburite Crystals on matrix, a good hand-sized piece with many danburite crystals with Calcite. One large pink crystal appears on the front of the piece. An interesting specimen of a popular mineral. A specimen of Danburite Crystals on Matrix. A big specimen in its natural form. This mineral is getting a lot harder to find, possibly because of its location. Danburite is not a well-known mineral but is growing in popularity.
7.5cm x 8.3cm x 7.4cm, 465g.
Aurora Mine, Charcas, San Luis Potosí, Mexico.
CaB 2 Si 2 O 8, Calcium boron silicate.
With crystals similar to topaz, danburite offers a unique opportunity for a collector who likes perfectly transparent crystal clusters. People who admire clear quartz will like the different look of danburite. Its diamond shaped cross section and wedge like termination is a contrast to quartz’s hexagonal prisms and pyramidal terminations. The original locality is buried under the city of Danbury in Connecticut.
CaCO3, Calcium Carbonate.
Calcite, name is from “chalix” the Greek word for lime. One of the most common minerals on Earth, comprising about 4% by weight of the Earth’s crust. 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. 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 the igneous rock called carbonatite and forms the major portion of hydrothermal veins. Its extraordinary diversity and beauty is what makes this mineral collectable.