•
Cabriite: Pd2SnCu – Canadian mineralogist
Louis J. Cabri (born 1934) •
Cámaraite: sorosilicate – Fernando Cámara (born 1967), mineralogist of Melilla, Spain •
Cancrinite: Na6Ca2[(CO3)2 –
Georg von Cancrin (1774–1845) •
Canfieldite: Ag8SnS6 – American mining engineer
Frederick Alexander Canfield (1849–1926) •
Cannonite: Bi2(OH)2SO4 – American mineralogist and electron microprobe analyst
Benjamin Bartlett (Bart) Cannon •
Carlfriesite: CaTe4+2Te6+O8 – American researcher at the Institute of Geology of the National university of Mexico
Carl Fries, Jr (1910–1965). •
Carlhintzeite: Ca2AlF7 – German mineralogist
Carl Hintze (1851–1916), University of Breslau •
Carlosruizite: K6(Na,K)4Na6Mg10(SeO4)12(IO3)12 – Chilean geologist
Carlos Ruiz Fuller (1916–1997), founder of the Chilean Geological Survey •
Carnallite: KMgCl3 – Prussian mining engineer,
Rudolf von Carnall (1804–1874) •
Carnotite: K2(UO2)2(VO4)2 – French mining engineer and chemist
Marie Adolphe Carnot (1839–1920) •
Cassidyite: Ca2Ni0.75Mg0.25(PO4)2 – American geologist
William A. Cassidy • Castaingite (discredited 1967: a mixture of cuprian
molybdenite and
gerhardtite) •
Caswellsilverite: NaCrS2 – American geologist, entrepreneur, and oilman
Caswell Silver (1916–1988) •
Cattiite: Mg3(PO4)2 · 22H2O – Michele Catti (b. 1945), Professor of Physical Chemistry, University of Milano-Bicocca, Italy •
Celsian: BaAl2Si2O8 – Swedish astronomer and naturalist
Anders Celsius (1701–1744) • And
paracelsian •
Cernyite: Cu2CdSnS4 – Canadian mineralogist
Petr Cerny •
Cesbronite: Cu6(TeO3)2(OH)6 – French mineralogist
Fabian Cesbron (1938–) •
Chrisstanleyite: Ag2Pd3Se4 – British mineralogist
Christopher John Stanley •
Clarkeite: – American mineral chemist and former chief chemist of the
United States Geological Survey Frank Wigglesworth Clarke (1847–1931) •
Cleveite (
uraninite var.): UO2 · UO3 · PO · ThO2 – Swedish chemist
Per Teodor Cleve (1840–1905) •
Clintonite: Ca(Mg,Al)3(Al3Si)O10(OH)2 – American statesman
De Witt Clinton (1769–1828) •
Coesite (form of SiO2): – American chemist
Loring Coes, Jr. (1915–1978) •
Coffinite: U(SiO4)1−x(OH)4x – American geologist
Reuben Clare Coffin •
Cohenite: – German mineralogist and petrographer
Emil Cohen (1842–1905) •
Colemanite: Ca2B6O11 – mine owner
William T. Coleman (1824–1893) •
Collinsite: Ca2Mg(PO4)2 –
William Henry Collins (1878–1937), director of the
Geological Survey of Canada •
Columbite: – Genoese explorer
Christopher Columbus (c. 1451–1506) • And manganocolumbite, ferrocolumbite, and Yttrocolumbite •
Cooperite: (Pt,Pd,Ni)S – South African metallurgist
Richard A. Cooper (1890–1972) •
Cordierite: (Mg,Fe)2Al4Si5O18 to (Fe,Mg)2Al4Si5O18 – French geologist
Louis Cordier (1777–1861) •
Covellite: CuS – Italian mineralogist
Niccolo Covelli (1790–1829) •
Criddleite (2.LA.25) •
Cronstedtite: (Fe2+,Fe3+)3(Si,Fe3+)2O5(OH)4 – Swedish mineralogist
Axel Fredrik Cronstedt (1722–1765) •
Crookesite: – English chemist and physicist Sir
William Crookes (1832–1919) •
Cuprosklodowskite: Cu(UO2)2(HSiO4)2·6(H2O) – Polish and naturalised-French physicist and chemist
Marie Curie (1867–1934) ==D==