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Cobalt Calcite w/Dolomite 4" x 2"

$95.00

Lovely pink-magenta in color cobaltoan calcite derives its name form the Greek chalx, meaning “lime” or any white, calcareous mineral.

Collectors acquire dolomite because of the rarity of the well-developed crystals; interesting mineralogical association; and unusual, curved crystal faces. The name “Dolomites” is derived from the famous French mineralogist Deodat Grate de Dolomieu who was the first to describe the rock, dolomite.

Locality: Kambove District, Democratic Republic of Congo

 

SKU: COB3. Tags: .

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CALCITE (var. COBALTOAN)

 

HISTORY, NAME, LOCALITIES: Calcite, pronounced CHAL-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 term “cobaltoan,” pronounced coh-BALT-oh-an, indicates the presence of the accessory element cobalt, which is a powerful chromophoric (color causing) agent.  Cobaltoan calcite is collected in China, Germany, Spain, Argentina, Mexico, Turkey, and the United States (Missouri, North Carolina, Utah, Wisconsin).

 

MINERALOGY, PROPERTIES, OCCURRENCE: Cobaltoan calcite [calcium carbonate, CaCO3] contains small amounts of the accessory element cobalt that imparts a distinctive, bright, pink-magenta color.  The physical properties of cobaltoan calcite are the same as those of calcite.  It crystallizes in the hexagonal (trigonal) system, usually as rhombohedrons, scalenohedrons, and prisms.  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.  The pink-magenta color of cobaltoan calcite is diagnostic.  Calcite forms in many mineralogical environments; when cobalt is present, it crystallizes as the cobaltoan variety.

 

METAPHYSICAL PROPERTIES, LORE, USES: Medieval practitioners used cobaltoan calcite to treat ailments of the blood.  Metaphysical practitioners believe that cobaltoan calcite is a calming stone that fills the heart with love, heals inner-child hurts, relieves anxiety and stress, and overcomes fear of nightmares.

 

COLLECTORS’ INFORMATION: Because of its eye-catching pink-magenta colors, cobaltoan calcite is one of the most widely collected forms of calcite and frequently used for display purposes.

 

DOLOMITE

 

HISTORY, NAME, LOCALITIES: Dolomite was described as a mineral species in 1791 and named for the French geologist Déodat de Dolomieu.  Dolomite is abundant and widely distributed, but good specimens are uncommon.  Notable sources are found in China, Austria, France, Germany, Morocco, South Africa, and the United States (Missouri, Illinois, Alabama, Georgia, New York).

 

MINERALOGY, PROPERTIES, OCCURRENCE: Dolomite [calcium magnesium carbonate, CaMg(CO3)2], pronounced DOUGH-low-mite, crystallizes in the hexagonal system (trigonal subsystem) as blocky, often twinned, rhombohedral crystals with slightly curved faces.  Dolomite also occurs in compact, granular, and massive forms and is the primary component of dolomite rock, which is similar to limestone.  It has a Mohs hardness of 3.5-4.0, pearly to vitreous luster, perfect cleavage in three directions to form rhombohedrons, and a specific gravity of 2.8-2.9.  Crystals, which are rarely well-developed, are transparent to translucent and usually white or colorless, although impurities can impart a range of subtle hues.  It occurs primarily in chemical sedimentary rocks (dolomite rock) and in metamorphosed dolomitic marbles.  It also is  found in metamorphic skarns and hydrothermal veins.

 

METAPHYSICAL PROPERTIES, LORE, USES:  According to modern metaphysical practitioners, dolomite relieves sorrow and the symptoms of depression, aligns and balances mental and emotional energies, and encourages charitable actions and generosity.  Dolomite is an important ore of magnesium and magnesium compounds; dolomite rock is quarried as a dimensional stone, cement aggregate, and road-fill material.

 

COLLECTORS’ INFORMATION: Collectors acquire dolomite because of the rarity of well-developed crystals; interesting mineralogical associations; and unusual, curved crystal faces.

SKU: COB3 Tag: .

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