calcite

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calcite crystal structure

Figure 2: Calcite crystals. Some of the many fairly common crystal habits represented by natural calcite crystals are illustrated here.

Showing the presence of travertine, a CaCO3 precipitate of calcite or aragonite, speleothem (cave formation), in southwestern Virginia, U.S.

Møn: chalk cliffs

Zincite in white calcite from Franklin, N.J.

Relations between lamellar twinning and cleavage planes in dolomite and calcite. This difference can be discerned best when thin sections of the minerals are viewed under a microscope.

$Figure 19: Double refraction showing two rays emerging when a single light ray strikes a calcite crystal at right angles to one face (see text).$

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Photos

calcite crystal structure

Figure 2: Calcite crystals. Some of the many fairly common crystal habits represented by natural calcite crystals are illustrated here.

Showing the presence of travertine, a CaCO3 precipitate of calcite or aragonite, speleothem (cave formation), in southwestern Virginia, U.S.

Møn: chalk cliffs

Zincite in white calcite from Franklin, N.J.

Relations between lamellar twinning and cleavage planes in dolomite and calcite. This difference can be discerned best when thin sections of the minerals are viewed under a microscope.

$Figure 19: Double refraction showing two rays emerging when a single light ray strikes a calcite crystal at right angles to one face (see text).$

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vaterite calcareous sinter Iceland spar calcium carbonate aragonite calcite group magnesite rhodochrosite siderite smithsonite

Basalt sample returned by Apollo 15, from near a long sinous lunar valley called Hadley Rille. Measured at 3.3 years old.

(Bed) Rocks and (Flint) Stones