Calcite Red

CALCITE (var. RED)

HISTORY, NAME, LOCALITIES: Calcite, pronounced KHAL-site, has been known since antiquity and is the most abundant carbonate mineral.  The name is derived from the Greek chalx, meaning “lime” or any white, calcareous mineral.  The color of red calcite is caused by included, microscopic particles of hematite.  Notable collecting localities are in Mexico, Argentina, Peru, Austria, France, Germany, England, Spain, Italy, China, Australia, Canada, South Africa, and the United States (Colorado, Montana, North Carolina, Idaho).

MINERALOGY, PROPERTIES, OCCURRENCE: Red calcite [calcium carbonate, CaCO3] contains included, microscopic particles of hematite [iron oxide, Fe2O3] that impart distinctive reddish and brownish-red colors.  Like other forms of calcite, red calcite crystallizes in the hexagonal (trigonal) system, usually as rhombohedrons, scalenohedrons, and prisms, and also occurs in massive form.  It has a Mohs hardness of 3.0, perfect cleavage in three directions to form rhombohedrons, and a specific gravity of 2.7-3.0.  Calcite forms in many mineralogical environments; when particulate hematite is present, it often crystallizes as the red variety.

METAPHYSICAL PROPERTIES, LORE, USES: Modern metaphysical practitioners consider red calcite an energizing and detoxifying stone that increases inner strength, assists with problem solving, eases and releases fears, and is emotionally uplifting and physically invigorating.  As a popular decorative stone, red calcite is fashioned into a wide array of objects.  It is often acid-treated to increase translucency and color intensity.

COLLECTORS’ INFORMATION: Because of its reddish colors, red calcite is a widely collected form of calcite and frequently used for display purposes.