Hawaiite identification and geology

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• Basalt
• Mugearite

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

2026-02-10T20:31:42.828172+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 Hawaiite?

Mildly alkaline basaltic rock transitional between alkali basalt and mugearite. Common on oceanic islands.

How can you identify Hawaiite?

Compare several properties rather than relying on colour alone. This entry records rock type: Igneous Extrusive; texture: Aphanitic to porphyritic; grain size: Fine; common minerals: Plagioclase labradorite-andesine, Augite, Olivine. Confirm an important identification with additional field tests or qualified laboratory work.

How does Hawaiite form?

Erupts from shield volcanoes and oceanic island volcanoes from mildly evolved alkaline magma.

Where is Hawaiite commonly found?

Hawaii, Canary Islands, East Africa; common in oceanic island volcanic settings.

What is Hawaiite commonly confused with?

Hawaiite may be confused with Basalt, Mugearite, Trachybasalt. Compare multiple diagnostic properties because colour and surface appearance can overlap.