پلاتنریت
Sign in to savePlattnerite is an oxide mineral and is the beta crystalline form of lead dioxide (β-PbO2), scrutinyite being the other, alpha form. It was first reported in 1845 and named after German mineralogist Karl Friedrich Plattner. Plattnerite forms bundles of dark needle-like crystals on various minerals; the crystals are hard and brittle and have tetragonal symmetry.
Key facts
- Mineral.name
- Plattnerite
- Mineral.category
- Oxide minerals
- Mineral.image
- Galena-Quartz-136082.jpg
- Mineral.caption
- Quartz and galena sample, plattnerite over the large galena cube.
- Mineral.formula
- PbO2
- Mineral.IMAsymbol
- Ptn
- Mineral.molweight
- 239.20 g/mol
- Mineral.strunz
- 4.DB.05
- Mineral.system
- Tetragonal
- Mineral.class
- Ditetragonal dipyramidal (4/mmm) H–M Symbol: (4/m 2/m 2/m)
- Mineral.symmetry
- P42/mnm
- Mineral.unit cell
- a = 4.95 Å, c = 3.38 Å; Z = 2
- Mineral.color
- Dark brown, iron-black
- Mineral.habit
- Prismatic crystals, may be nodular or botryoidal, fibrous and concentrically zoned, massive
- Mineral.twinning
- Contact and penetration twinning on {011}, rarely polysynthetic
- Mineral.cleavage
- None
- Mineral.fracture
- Sub-conchoidal, fibrous
- Mineral.tenacity
- Brittle
via Wikipedia infobox
Wikidata facts
- Has part
- lead dioxide
- Named after
- Karl Friedrich Plattner
- Image
- Plattnerite16346-5.jpg
Show 9 more facts
- IMA Mineral Symbol
- Ptn
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 4.DB.05
- Commons category
- Plattnerite
- chemical formula
- PbO₂
- Nickel-Strunz 9th edition (updated 2009)
- 4.DB.05
- Strunz 8th edition (series ID, updated)
- IV/D.02
- crystal system
- tetragonal crystal system
- type locality (geology)
- Leadhills
- streak color
- chestnut
Sources (1)
via Wikidata · CC0