Laurionite
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Description
A rare halide mineral composed of lead chloride hydroxide. Laurionite crystals occurs as colorless, transparent, striated prisms. They were first identified in ancient lead slags at Laurium, Greece. Deposits are also found in Wheal Rose, England. Laurionite forms when saline containing water comes in contact with lead.
Synonyms and Related Terms
lead chloride hydroxide
Other Properties
Fine, colorless, orthorhombic, tabular crystals. Fracture= uneven Luster = pearly to adamantine Streak = white
| Composition | PbClOH |
|---|---|
| Mohs Hardness | 2.5-3.5 |
| Density | 6.24 |
| Molecular Weight | 259.66 |
| Refractive Index | 2.077; 2.116; 2.158 |
Additional Information
Web Minerals: Laurionite
Sources Checked for Data in Record
- Website address 1 Comment: Mindat at http://www.mindat.org/min-2343.html (accessed Nov 19, 2008)
- Website address 2 Comment: Web Minerals at http://www.webmineral.com/data/Laurionite.shtml (accessed Nov 19, 2008)
- Website address 1 Comment: Mindat at http://www.mindat.org/min-2343.html (accessed Nov 19, 2008)
Hardness=3.0-3.5
- Website address 2 Comment: Web Minerals at http://www.webmineral.com/data/Laurionite.shtml (accessed Nov 19, 2008)
Hardness=2.5-3.0
- Website address 3 Comment: Mineral Galleries at http://www.galleries.com/minerals/halides/laurioni/laurioni.htm (accessed Nov. 19, 2008)
Hardness=3.0-3.5