Lead Copper Hydroxy Sulfate
PbCu[(OH)2|SO4]
![Lead Copper Hydroxy Sulfate - PbCu[(OH)2|SO4]](../bilder/kristalle/Linarite.jpg "Lead Copper Hydroxy Sulfate - PbCu[(OH)2|SO4]")
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Chemical name
Lead Copper Hydroxy Sulfate |
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Mineral name
Linarite |
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Chemical formula
PbCu[(OH)2|SO4] |
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Crystal system
monoclinic |
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Crystal Class
monoclinic-prismatic (2/m) |
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Space Group
P2_1/m |
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Unit cell
a [Å]:9.81 b [Å]:5.65 c [Å]:4.70 |
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Molecular weight [g/mol]
400.82 |
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Formula units
Z=2 |
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Twinning
common on {100}, also {001} |
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Mohs hardness
2.5 |
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Density [g/cm3]
5.3 - 5.5 |
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Cleavage
perfect on {100}, imperfect on {001} |
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Fracture / Tenacity
conchoidal |
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Color
deep azure blue |
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Streak
pale blue |
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Transparency
transparent to translucent |
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Luster
subadamantine, vitreous |
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Optical character
biaxial (-) |
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Refractive Index
nα=1.809; nβ=1.838; nΥ=1.859 |
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Birefringence δ
0.050 |
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Pleochroism δ
moderate |
