penfieldite
Sign in to savePenfieldite is a rare lead hydroxychloride mineral from the class of halides. It was named after Samuel Lewis Penfield. It has been a valid species before the founding of IMA, and was first published in 1892. It had been grandfathered, meaning the name penfieldite is still believed to refer to a valid species. When it was first described by Genth in 1892 from Laurion, Greece, the mineral had the formula of Pb3Cl4O.
Key facts
- Mineral.strunz
- 03.DC.15
- Mineral.system
- Hexagonal
- Mineral.dana
- 10.04.01.01
- Mineral.boxbgcolor
- 52b4e7
- Mineral.image
- Penfieldite-Boleite-Cotunnite-206830.jpg
- Mineral.formula
- Pb2Cl3(OH)
- Mineral.IMAsymbol
- Pfd
- Mineral.class
- Trigonal Dipyramidal H-M symbol:
- Mineral.symmetry
- P
- Mineral.unit cell
- 5,360.83
- Mineral.molweight
- 537.77
- Mineral.color
- Colorless, white, yellowish, bluish
- Mineral.cleavage
- Distinct/good on {0001}
- Mineral.mohs
- 3–4
- Mineral.luster
- Adamantine, greasy
- Mineral.opticalprop
- Uniaxial (+)
- Mineral.refractive
- nω = 2.130(1) nε = 2.210(1)
- Mineral.birefringence
- 0.080
via Wikipedia infobox
Wikidata facts
- Image
- Penfieldite-205451.jpg
Show 6 more facts
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 3.DC.15
- Commons category
- Penfieldite
- Nickel-Strunz 9th edition (updated 2009)
- 3.DC.15
- IMA Mineral Symbol
- Pfd
- chemical formula
- Pb₂Cl₃(OH)
- Strunz 8th edition (series ID, updated)
- III/C.06
via Wikidata · CC0
~3 min read
Article
4 sectionsContents
- Properties
- Classification
- Occurrences and localities
- References
{{Infobox mineral|boxbgcolor=#52b4e7|image=Penfieldite-Boleite-Cotunnite-206830.jpg|formula=Pb2Cl3(OH)|IMAsymbol=Pfd|strunz=03.DC.15|system=Hexagonal|dana=10.04.01.01|class=Trigonal Dipyramidal H-M symbol: |symmetry=P|unit cell=5,360.83|molweight=537.77|color=Colorless, white, yellowish, bluish|cleavage=Distinct/good on {0001}|mohs=3–4|luster=Adamantine, greasy|opticalprop=Uniaxial (+)|refractive=nω = 2.130(1) nε = 2.210(1)|birefringence=0.080|streak=White|gravity=6.00|density=Measured: 5.82 – 6.61 Calculated: 6.00|solubility=Soluble in water|diaphaneity=Transparent}}
Penfieldite is a rare lead hydroxychloride mineral from the class of halides. It was named after Samuel Lewis Penfield. It has been a valid species before the founding of IMA, and was first published in 1892. It had been grandfathered, meaning the name penfieldite is still believed to refer to a valid species. When it was first described by Genth in 1892 from Laurion, Greece, the mineral had the formula of Pb3Cl4O.