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Calciohilairite

{110}, {120}, {102}

Calcite

{101}

Calcite

{021}

Calcite

{211}

Calcite

{021}, {101}

Calcite

{100}, {101}

Calcite

{401}, {211}

Calcite

{100}, {331}, {001}

Calcite

{401}, modified

Calcite

Contact twin on {001}

Calcite

{100}, {101}, {045}

Calcite

Contact twin on {001}

Calcite

Contact twin on {001}

Calcite

Parallel growth of flat rombohedra

Calcite

{021}, modified

Calcite

{401}, modified

Calcite

{100}, {101}, modified

Calcite

{2131}, modified

Calcite

{021}, {100}, modified

Calcite

{101}, modified

Calcite

{101}, modified

Calcite

{532}, modified

Calcite

{214}, {110}, modified

Calcite

Contact twin on {001}

Calcite

{401}, {725}, modified

Calcite

{581}, {101}, modified

Calcite

Contact twin on {101}

Calcite

Contact twin on {101}

Calcite

Contact twin on {021}

Calcite

Contact twin on {012}

Calcite

Contact twin on {001}

Calcite

{211}, {012}

Calcite

{413}, {100}, {012}

Calcite

{413}, {100}, {012}, contact twin on {001}

Calcite

{012}, {100}

Calcite

Contact twin on {001}, triangular habit due to underdevelopment of prism faces

Calcite

{413}, {100}, {012}, contact twin on {001}

Calcite

{413}, {081}, modified, contact twin on {001}

Calcite

{012}, {283}, contact twin on {001}

Calcite

{101}, {021}

Calcite

Contact twin on {012}

Calcite

{2131}, {0112}

Calcite

Contact twin on {1011}

Calcite

Contact twin on {0001}, contact plane {1010}

Calcite

Contact twin on {0001}, contact plane {1010}

Caledonite

{010}, {100}, {101}

Caledonite

Prismatic [001]

Calomel

Prismatic {110}

Calomel

{118}, {111}, modified

Calomel

Contact twin on {112}

Calomel

{110}, {013}, modified

Carnallite

Equant

Carnallite

Tabular {001}

Cassiterite

{110}, {111}, modified

Cassiterite

{110}, {111}, modified

Cassiterite

Contact twin on {101}

Cassiterite

Repeated contact twin on {101}

Cassiterite

Repeated contact twin on {101}

Cassiterite

Repeated contact twin on {101}

Cassiterite

{111}, {011}

Cassiterite

{676}, modified

Catapleiite

{100}, {001}

Catapleiite

Tabular {001}

Catapleiite

Tabular {001}

Catapleiite

Tabular {001}

Catapleiite

{001}, {103}

Cavansite

{111}, {101}

Celestine

Prismatic {011}, {210}, modified

Cerussite

Tabular {010}

Cerussite

{010}, {021}, {012}, {110}, {111}

Cerussite

Repeated penetration twin on {110}

Cerussite

Tabular {100}

Cerussite

Contact twin on {110}

Cerussite

Prismatic [100], highly modified

Cerussite

Pseudohexagonal {111}, {021}

Chabazite

{101}

Chalcocite

Tabular {001}, modified

Chalcocite

Penetration twin on {032}

Chalcocite

Multiple twin on {110}

Chalcocyanite

{010}, {110}, {011}, modified

Chalcophyllite

Tabular {001}

Chalcopyrite

Lamellar contact twin on {112} by {112}

Chalcopyrite

{112} modified by {112}

Chalcopyrite

{112} + {112}, modified

Chalcopyrite

Contact twin on {112} by {112}

Chalcosiderite

{110}, {010}, {001}, {111}, modified

Chalcostibite

Tabular {100}

Chalcostibite

Tabular {010}, {061}, {110}

Chalcostibite

Tabular {010}

Childrenite

{110}, {100}, {121}, {121}, modified

Childrenite

{110}, {100}, {131}, {131}, {121}, {121}

Chondrodite

{011}, {221}, {223}

Chondrodite

Highly modified crystal

Chromite

{111}

Chromite

{110}

Chrysoberyl

Contact twin on {130}

Chrysoberyl

Repeated penetration twin on {130}

Chrysoberyl

Tabular {001}

Cinnabar

{100}, {001}, {045}, {025}

Cinnabar

{011}

Cinnabar

{205}, {100}

Cinnabar

{101}, {508}, {001}, modified

Cinnabar

{102}, modified, penetration twin on {001}

Claudetite

{010}, {110}, {111}, {101}

Claudetite

Tabular {010}

Clinochlore

{101}, {100}, {001}

Clinohedrite

Clinohumite

Highly modified crystal

Cobaltite

{100}, {210}

Cobaltite

{111}, {210}

Colemanite

{110}, {011}, {221}, {111}, highly modified

Colemanite

Short prismatic [001], highly modified

Columbite

Tabular {010}, modified

Columbite

{010}, {111}, {110}, modified

Columbite

Equant

Colusite

{210}, {111}, {110), modified

Copper

{111}

Copper

{100}

Copper

{100}, modified

Copper

Contact twin on {111}

Copper

{100}, modified

Cordierite

{110}, {130}, {001}, modified

Cordierite

Prismatic [001], modified

Cordylite-(Ce)

Prismatic {100}

Cordylite-(Ce)

Parallel growth of dipyramidal crystals

Cordylite-(Ce)

{101}, {001}, modified

Corundum

Several dipyramids {hhl}

Corundum

{773}, {111}, {001}, modified

Corundum

{101}, {001}, modified

Corundum

{100}, {001}, modified

Corundum

Tabular {001}

Corundum

{111}

Corundum

Contact twin on {102}, flattened crystals

Cosalite

{100}, {010}, {301}, modified

Cotunnite

Prismatic [001]

Cotunnite

Tabular {010}

Covellite

Tabular {001}

Creedite

Prismatic {110}

Cristobalite

{111}

Crocoite

{110}, {401}, {111}

Crocoite

{110}, {111}, {111}, modified

Cryolite

{111}, {001}, modified

Cryolite

{110}, {001}, modified

Cryolithionite

{110}

Cryolithionite

{110}, {211}

Cubanite

{110}, {010}, {101}, modified

Cubanite

{100}, {110}, {001}, {011}, modified

Cuprite

{111}

Cuprite

{110}

Cuprite

{111}, {321}

Cuprite

{100}, {111}, gyroid 968

Cuprite

Cubic

Curite

Prismatic [001]