Where it forms, where it's found
- Geological setting
oxidation product of pyrite
- Type locality
- Redington Mine (Boston Mine
- Knoxville Mine
- Excellsior Mine)
- Knoxville
- Knoxville Mining District
- Napa County
- California
- USA
38.8253°, -122.3389°
1recorded occurrences
Physical
- Hardness
- 1Talc
- 2Gypsum
- 3Calcite
- 4Fluorite
- 5Apatite
- 6Orthoclase
- 7Quartz
- 8Topaz
- 9Corundum
- 10Diamond
- Transparency
- Translucent
- Colour
- White · pink · purple
The purple color occurs on fractures across the fiber length.
- Streak
- White
- Density
- 1.761 g/cm³
Optical
- Optical type
- Biaxial
- Birefringence
- Weak.
Crystallography
- Morphology
Massive with a fine parallel-fibrous structure.
- Comment
Space Group: n.d. Z = n.d.
Chemical composition
Synonyms
- Redingtoniet
In other languages
- German
- Redingtonit
- Italian
- Redingtonite
Classification
Strunz
10th ed.7.CB.85
- 7SulfatesClass
- 7.CSulfates (selenates, etc.) without additional anions, with H2ODivision
- 7.CBWith only medium-sized cationsGroup
- 7.CB.85RedingtoniteSpecies
Dana
8th ed.29.07.03.06
- 29Hydrated Acid and Normal SulfatesClass
- 29.07AB2(XO4)4·H2OType
- 29.07.03Halotrichite Group (Monoclinic with 22 H2O)Group
- 29.07.03.06RedingtoniteSpecies
CIM
—25.8.7
- 25SulphatesClass
- 25.8Sulphates of Sb, V, Cr and UGroup
- 25.8.7RedingtoniteSpecies
Group, growth & confusion
Literature, links & citation
Citations
- 1888Becker G F (1888) Descriptive geology of the Knoxville District. Redingtonite. Monographs of the United States Geological Survey 13, 279-279
- 1890Melville, William Harlow; Lindgren, Waldemar (1890) Contributions to the mineralogy of the Pacific coast. Bulletin 61. US Geological Survey 41 pp. doi:10.3133/b61 DOI: 10.3133/b61
- 1951Palache, Charles; Berman, Harry; Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.
- 1971Pemberton, H. Earl (1971) New Minerals From California. The Mineralogical Record, 2 (4) 152-161
- 2005(2005) Redingtonite. Handbook of Mineralogy. Mineralogical Society of America
Cite this entry
@misc{mineral2026,
author = {Mineral Index editorial board},
title = {Redingtonite — Mineral Index},
year = {2026},
url = {https://mineralindex.org/minerals/redingtonite-3379},
note = {Accessed 2026-05-11}
}