Mineralogy Database

Lopezite Mineral Data

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General Lopezite Information

Help on Chemical Formula: Chemical Formula: K2Cr2O7
Help on Composition: Composition: Molecular Weight = 294.18 gm
   Potassium  26.58 %  K    32.02 % K2O
   Chromium   35.35 %  Cr   67.98 % CrO3
   Oxygen     38.07 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K2Cr2O7
Help on Environment: Environment: Rare secondary mineral in vugs in massive nitrate rock.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1937
Help on Locality: Locality: In Chile, in Tarapaca, from Oficina Rosario, Huara, Pampa del Iquique; Oficina Maria Elena, near Tocopilla, Pampa del Tocopilla; and at Zapiga. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Emiliano Lopez Saa (1871-1959), Iquique, Chile, Chilean mining engineer and mineral collector long associated with the Chilean nitrate industry.
Help on Name Pronunciation: Name Pronunciation: Lopezite Say LOPEZITE
Help on Synonym: Synonym: ICSD 10371
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