leightonite
Sign in to saveLeightonite is a rare sulfate mineral with formula of K2Ca2Cu(SO4)4•2H2O.
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- Leightonite-120494.jpg
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- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 7.CC.70
- Commons category
- Leightonite
- Nickel-Strunz 9th edition (updated 2009)
- 7.CC.70
- IMA Mineral Symbol
- Lgh
- chemical formula
- K₂Ca₂Cu(SO₄)₄·2H₂O
- Strunz 8th edition (series ID, updated)
- VI/C.14
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4 sectionsContents
- Crystal class
- Optical class
- Discovery and occurrence
- References
Leightonite is a rare sulfate mineral with formula of K2Ca2Cu(SO4)4•2H2O.
==Crystal class== Leightonite forms flattened to elongated bladed crystals of variously interpreted crystal structure. Its crystal system is reported as triclinic morphologically, but also as pseudo-orthorhombic due to intricate lamellar twinning that mimics orthorhombic symmetry. Because it is triclinic, the crystal is represented by a system of three unequal vectors with corresponding unequal angles between them.
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