Calcium carbonate, or carbonate of lime. It is rhombohedral in its crystallization, and thus distinguished from aragonite. It includes common limestone, chalk, and marble. Called also calc-spar and calcareous spar.
The main mineral form of calcium carbonate.
A mineral form of calcium carbonate. Principle constituent of most limestones.
A mineral having the composition calcium carbonate ( CaCO3 ) and a specific crystal structure. This mineral is the principal constituent of limestone, chalk and marble. Used as a major constituent in the manufacture of portland cement.
The mineral made of calcium carbonate (CaCO3) - the stuff of limestones.
The most common mineral form of calcium carbonate and the main constituent of limestone. Has different crystal forms in the rhombohedral line.
a mineral (CaCO) composed of calcium carbonate; the principal component of limestone.
(cal'-cite) A common rock-forming hexagonal mineral (CaCO3) that has perfect rhombhedral cleavage and effervesces (bubbles) in cold, dilute HCl acid.
the major mineral form of the compound calcium carbonate, CaCO3. It is a common rock-forming mineral and is the chief constituent of limestone and marble.
A common crystalline form of natural calcium carbonate, CaCO3, that is the basic constituent of limestone, marble, and chalk. Also called calcspar.
The common (trigonal) crystal form of calcium carbonate [CaCO3], typically occurring in caves as massive or finely crystalline speleothems (qv) or as larger crystal forms.
Calcium Carbonate (CaCO3). Exists as two forms, low and high Mg. Only low Mg is stable at the Earth's surface.
Calcite is a mineral, calcium carbonate, or CaCO3. It is the primary constituent of the rock limestone, and it is also formed by many organisms (as in mollusk shells, for example). Calcite is relatively soft, and it will dissolve in acid. For this reason many limestone gravestones in northeastern US are becoming illegible because acid rain is eroding their carvings. See also Amethyst Galleries.
A mineral that is commonly secreted by marine invertebrate animals to form shells or other types of exoskeletons. The chemical formula of calcite is CaCO3. Aragonite is another mineral with the same chemical formula, but a different crystal structure. Both calcite and aragonite are polymorphs of CaCO3.
A common mineral, also known as calcium carbonate, that occurs in a great variety of crystalline forms. It is a major constituent of limestone, marble, chalk and the exoskeletons of many marine organisms.
A common rock-forming mineral consisting of CaCO3; it may be white, colorless, or pale shades of gray, yellow, and blue; it has perfect rhombohedral cleavage, appears vitreous, and has a hardness of 3 on the Mohs' scale; it effervesces (fizzes) readily in cold dilute hydrochloric acid. It is the principal constituent of limestone.
The crystal form of Calcium Carbonate, the constituent of Marble.
mineral made of calcium carbonate, found in limestone, chalk, marble, and the shells of some organisms.
Naturally occurring calcium carbonate (CaCO3), the main constituent of limestone and chalk, which is present in calcareous clays.
a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone
a carbonate mineral with the chemical formula of CaCO3
(CaCO3) very common mineral, usually white, found as infilling in fossil bones
A common mineral consisting of crystallised calcium carbonate, the main constituent of limestone.
The natural mineral form of calcium carbonate (CaCO3).
a mineral consisting of CaCO3. Sometimes Mg2+ substitutes for Ca2+ forming Mg-calcite.
CaCO. A common sedimentary mineral that forms by direct precipitation from aqueous solutions or through biological activity. See also the field guide entry for calcite.
Rhombohedral form of calcium carbonate, CaCO3. Effervesces in dilute HCl.
Calcium carbonate, CaCo3, with hexagonal crystalization. This mineral is found in the form of limestone, chalk and marble and is the basic mineral from which many formations, including stalagmites and stalactites, are made.
Transparent to opaque, calcium carbonate. Varied colors include yellow, orange and blue. (3)
A mineral composed of calcium carbonate. When carbonic acid in rainwater comes in contact with calcite, the calcite begins to dissolve. The process of dissolving enough calcite to form a large cavern may take hundreds of thousands of years.
Group of minerals belonging to the carbonate group that are isomorphous with one another and have the same properties, such as that they all: 1. Crystallize in the trigonal sect of the hexagonal system, and most commonly form rhombohedrons and scalenohedrons. 2. Have perfect rhombohedral cleavage 3. Exhibit a very strong double refraction in transparent rhombohedrons
A common rock-forming mineral: CaCO3. Calcite can be white, colorless, or pale shades of gray, yellow, and blue. It readily effervesces (bubbles) in hydrochloric acid and is the principal component of limestone.
A common rock forming mineral of calcium carbonate (CaCO3), found primarily in limestones but also commonly forming a diagenetic cement in many other rock types and as a gangue mineral in many ore deposits.
Mineral made of calcium carbonate (CaCO3). Generally white, easily scratched with knife. Most seashells are made of calcite or related minerals. This is the lime of limestone. more details...
Calcium carbonate (CaCO3) is the principal mineral in limestone.
Calcite - Hexagonal calcium carbonate, cf. aragonite.
Crystalline form of limestone. Often incorrectly called alabaster.
a mineral composed of calcium carbonate: CaCO3
A common, white mineral composed of calcium carbonate, and the principal constituent of limestone.
is the crystallized form of calcium carbonate of lime, which is the main mineral that makes up the speleothems. Calcite is white in color, but most cave speleothems apear brownish-red in color, because of their impurities (sand, clay, iron-oxide, or other minerals).
Calcium Carbonate in six faced crystalline form
Calcium carbonate, a mineral often introduced by mineralizing solutions.
the mineral form of calcium carbonate. Limestones are made mostly of calcite.
A common rock forming mineral composed of calcium and carbonate.
crystalline mineral consisting of calcium carbonates.
is a very soft mineral that occurs in a transparent to semitranslucent material, in a wide variety of color and patterns. Some of the varieties include Iceland spar, satin spar, marble and travertine. Sources: widespread.
Calcite is formed in the veins of limestone and is one of the more common minerals. Optical calcite has a special property that produces a double image when you look through the mineral. This double image is produced as light reflects off the atoms in the mineral's structure, splitting into two rays.
A generally light-colored mineral composed of calcium carbonate. Calcite is fairly soft and effervesces (bubbles) in weak acids. It is the principal mineral in limestone and many marbles.
The crystal master gains a Wisdom bonus of +1. This bonus increases by +1 for every two additional embedded gems (+2 at 3 embedded gems, and +3 at 5 embedded gems). This ability is active as long as the crystal master maintains psionic focus.
See calcium carbonate.
Mineral formed from calcium carbonate. Common mineral found in limestone.
1. Calcium carbonate (CaCO3).
The main raw material used in the manufacture of Portland cement. Calcite is a crystallized form of calcium carbonate and is the principal component in limestone, chalk, and marble.
A mineral composed of calcium carbonate [LCOTE
Calcium carbonate (CaCO3). 2. A trade name for finely ground grades of marble or limestone, very high in calcium carbonate, which are used to raise the pH reading (reduce the acidity) of low pH (acidic) water or to filter out sediment.
Crystalline calcium carbonate, CaCO3. Crystalizes in the hexagonal system, the main types of crystals in soils being dog-tooth, prismatic, nodular,fibrous granular and compact.
Calcite (Calcium Carbonate, CaCO3) is a very common mineral that comes in a wide variety of forms, shapes and colors. The trigonal crystals range from translucent to transparent. Transparent calcite exhibits a double refraction effect (when you look through the crystal, singel items are doubled). Calcite has a hardness of 3 (most forms), a specific gravity of about 2.7, a refractive index of 1.49 and 1.66, and a white streak.
Subject: The Earth A common rock-forming mineral, CaCO3. It is usually white, colorless or light shades of gray, yellow and blue. Calcite is a principal constituent of limestone. [ Pics List
The carbonate mineral calcite is a chemical or biochemical calcium carbonate corresponding to the formula CaCO3 and is one of the most widely distributed minerals on the Earth's surface. It is a common constituent of sedimentary rocks, limestone in particular. It is also the primary mineral in metamorphic marble.