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Mugearite identification and geology

Mugearite rock reference specimen

Moderately alkaline volcanic rock transitional between hawaiite and benmoreite in the alkaline basalt series. Texture: Aphanitic. Rock type: Igneous Extrusive. Grain size: Fine. Minerals present: Plagioclase oligoclase, Augite, Olivine, Fe-Ti oxides. Formation: Erupts from oceanic island and continental rift volcanoes as differentiated alkaline magma. Common geological settings: Skye Scotland , Hawaii, East Africa; found in oceanic island and rift volcanic settings. Common look-alikes and related entries: Hawaiite, Basalt, Trachybasalt.

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Sources, scope & corrections

These authoritative resources support category-level nomenclature, terminology, identification methods, and safety. When a specimen-specific safety warning appears, the public-health source listed here directly supports that precaution. They are not line-by-line citations for every other property on this entry, and natural specimens vary.

Editorial owner
GeoMiner
Last updated
2026-03-30T14:38:17.298797+00:00
Review status
Published; not independently peer-reviewed
  • Rocks — U.S. National Park Service. Authoritative overview of rock groups, the rock cycle, and geologic processes.
  • Can you identify my rock or mineral? — U.S. Geological Survey. Identification limitations and routes to in-person professional verification.

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Common questions

What is Mugearite?
Moderately alkaline volcanic rock transitional between hawaiite and benmoreite in the alkaline basalt series.
How can you identify Mugearite?
Compare several properties rather than relying on colour alone. This entry records rock type: Igneous Extrusive; texture: Aphanitic; grain size: Fine; common minerals: Plagioclase oligoclase, Augite, Olivine, Fe-Ti oxides. Confirm an important identification with additional field tests or qualified laboratory work.
How does Mugearite form?
Erupts from oceanic island and continental rift volcanoes as differentiated alkaline magma.
Where is Mugearite commonly found?
Skye Scotland , Hawaii, East Africa; found in oceanic island and rift volcanic settings.
What is Mugearite commonly confused with?
Mugearite may be confused with Hawaiite, Basalt, Trachybasalt. Compare multiple diagnostic properties because colour and surface appearance can overlap.

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