Motukoreaite

A variety of Minerals

Motukoreaite specimen - rock identification

What is Motukoreaite?

Motukoreaite occurs as claylike cement or hexagonal tabular crystals up to 0.2 mm (0.0079 in) in size that form rosettes, boxworks, and subparallel aggregates. The crystals are semitransparent and are white, pale yellow, pale yellow-green, or colorless. The mineral readily dehydrates partially. Motukoreaite has been found in association with apatite, barite, calcite, chabazite, calcic plagioclase, gismondine, gypsum, hisingerite, hydrotalcite, limonite, magnetite, montmorillonite, nordstrandite, olivine, phillipsite, pyroxene, quartz, and zeolites.

Motukoreaite Market Value Calculator

Estimate the market value of Motukoreaite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Preview only. Full pricing comps and valuation report in the app.

Motukoreaite Localities Map

See where Motukoreaite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

Key Characteristics

Formation of Motukoreaite

Motukoreaite forms from the alteration of submarine basaltic glass at temperatures below 150 °C (302 °F). The alteration occurs in the sequence motukoreaite, phillipsite, calcite. A study in 1989 suggested that motukoreaite is a common, widely occurring mineral.

Quick Facts

Physical Properties

Color
colorless, white, yellow
Hardness (Mohs)
1 - 1.5
Density
1.478 g/cm³

Chemical Properties

Chemical Formula
Mg6Al3(OH)18[Na(H2O)6][SO<sub>4</sub>]2 · 6H2O
Elements
Al, H, Mg, Na, O, S
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