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Tholeiite

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Synonym:
A synonym of Tholeiitic basalt
A silica-oversaturated (quartz-normative) basalt, characterized by the presence of low-calcium pyroxenes (orthopyroxene and/or pigeonite) in addition to clinopyroxene and calcic plagioclase. Olivine may be present in the mode, but neither olivine nor nepheline appear in the norm.




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References for TholeiiteHide

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Klaus K.E. Neuendorf, James P. Mehl, Jr., and Julia A. Jackson (Editors), 2017. Glossary of Geology. Fifth REVISED edition. American Geological Institute (abbreviated as AGI).

Internet Links for TholeiiteHide

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https://www.mindat.org/min-48499.html
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Localities for TholeiiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Canada
 
  • Ontario
    • Cochrane District
      • Timmins area
        • Kidd Township
On Geology and Ore Deposits of the Timmins District, Ontario. Geological Survey Of Canada (open file 2161, field trip 6)
New Zealand
 
  • Kermadec Islands
Lloyd, E.F., Nathan, S., Smith, I.E.M., Stewart, R.B. (1996) Volcanic history of Macauley Island, Kermadec Ridge, New Zealand. New Zealand Journal of Geology and Geophysics, 39:2, 295-308.
 
Mineral and/or Locality  
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