Earlandite
A variety of Minerals
What is Earlandite?
Earlandite, [Ca3(C6H5O7)2(H2O)2]·2H2O, is the mineral form of calcium citrate tetrahydrate. It was first reported in 1936 and named after the English microscopist and oceanographer Arthur Earland FRSE. Earlandite occurs as warty fine-grained nodules ca. 1 mm in size in bottom sediments of the Weddell Sea, off Antarctica. Its crystal symmetry was first assigned as orthorhombic, then as monoclinic, and finally as triclinic.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Earlandite 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.
Earlandite Localities Map
See where Earlandite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- White, pale yellow
- Density
- 1.96 g/cm³
Chemical Properties
- Chemical Formula
- Ca3[CH2(COO)-CHOH(COO)-CH2(COO)]2 · 4H2O
- Elements
- C, Ca, H, O
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Earlandite FAQs
How do I identify Earlandite?
Earlandite can be identified by its White color. Look for these key characteristics when examining specimens.
What color is Earlandite?
Earlandite typically appears in White, pale yellow. Color can vary depending on impurities and formation conditions.
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