Motukoreaite
A variety of Minerals
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.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Motukoreaite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Motukoreaite Localities Map
See where Motukoreaite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
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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Motukoreaite FAQs
How do I identify Motukoreaite?
Motukoreaite can be identified by its hardness of 1 - 1.5 on the Mohs scale, colorless color. Look for these key characteristics when examining specimens.
What color is Motukoreaite?
Motukoreaite typically appears in colorless, white, yellow. Color can vary depending on impurities and formation conditions.
How hard is Motukoreaite?
Motukoreaite has a hardness of 1 - 1.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
What is the formation of motukoreaite 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.
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