Novaculite

Where it forms, where it's found

Geological setting

Occurs in extensive layered deposits

11recorded occurrences
Source · OpenStreetMap

Physical

Hardness
123456789107/ 10 MOHS
  1. 1Talc
  2. 2Gypsum
  3. 3Calcite
  4. 4Fluorite
  5. 5Apatite
  6. 6Orthoclase
  7. 7Quartz
  8. 8Topaz
  9. 9Corundum
  10. 10Diamond
Transparency
Opaque
Colour
White · gray · black

Color varies from white when pur to dark when additional minerals are present.

Streak
White
Fracture
Sub-Conchoidal

Literature, links & citation

Citations
  1. —https://en.wikipedia.org/wiki/Novaculite
  2. 1969David E. Park, Jr. (2), Carey Crone, (1969) Origin of Caballos and Arkansas Novaculite Formations. AAPG Bulletin, 53. doi:10.1306/5d25c597-16c1-11d7-8645000102c1865dDOI: 10.1306/5d25c597-16c1-11d7-8645000102c1865d
  3. 1976Robert L. Folk, Earle F. McBride (1976) The Caballos Novaculite Revisited Part I: Origin of Novaculite Members. SEPM Journal of Sedimentary Research, Vol. 46. doi:10.1306/212f701d-2b24-11d7-8648000102c1865dDOI: 10.1306/212f701d-2b24-11d7-8648000102c1865d
  4. 1985KELLER, WALTER D., STONE, CHARLES G., HOERSCH, ALICE L. (1985) Textures of Paleozoic chert and novaculite in the Ouachita Mountains of Arkansas and Oklahoma and their geological significance. Geological Society of America Bulletin, 96 (11) 1353 doi:10.1130/0016-7606(1985)96<1353:topcan>2.0.co;2DOI: 10.1130/0016-7606(1985)96<1353:topcan>2.0.co;2
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Novaculite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/novaculite-9859},
  note      = {Accessed 2026-05-11}
}