Jump to: navigation, search


A mineral composed of basic zinc carbonate. Hydrozincite deposits are found in Missouri, Pennsylvania, Utah, California, Nevada and Europe. It is a grayish -white ore that fluoresces in ultraviolet light. Basic zinc carbonate also occurs as zinc bloom, a tarnish that forms on metallic zinc in moist air.

Synonyms and Related Terms

zinc bloom

Composition Zn5(CO3)2(OH)6
Mohs Hardness 2.0 - 2.5
Density 3.5-4.0

Sources Checked for Data in Record

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997