brownmillerite
Sign in to saveAlso known as IMA1963-017, calcium aluminoferrite
Brownmillerite is a rare oxide mineral with chemical formula . It is named for Lorrin Thomas Brownmiller (1902–1990), chief chemist of the Alpha Portland Cement Company, Easton, Pennsylvania.
In the Vinony graph
Within Vinony's link graph, brownmillerite is referenced by 16 other articles, and connects out to Germany, Israel and Austria.
It is catalogued under topics including Minerals in space group 46, Orthorhombic minerals and Oxide minerals.
Its subject is documented across 10 Wikipedia language editions.
Key facts
- Mineral.name
- Brownmillerite
- Mineral.image
- Brownmillerite-103177.jpg
- Mineral.imagesize
- 260px
- Mineral.caption
- Red/red-brown crystals of brownmillerite from Caspar quarry, Bellerberg Volcano, Ettringen, Mayen, Eifel Mts, Rhineland-Palatinate, Germany
- Mineral.category
- Oxide mineral
- Mineral.IMAsymbol
- Bmlr
- Mineral.strunz
- 4.AC.10
- Mineral.dana
- 7.11.2.1
- Mineral.system
- Orthorhombic
- Mineral.class
- Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)
- Mineral.symmetry
- Ibm2
- Mineral.unit cell
- a = 5.57 Å, b = 14.52 Å, c = 5.34 Å; Z = 4
- Mineral.color
- Reddish brown
- Mineral.habit
- As minute square platelets; massive
- Mineral.diaphaneity
- Semitransparent
- Mineral.gravity
- 3.76
- Mineral.opticalprop
- Biaxial (−)
- Mineral.refractive
- nα = 1.960 nβ = 2.010 nγ = 2.040
via Wikipedia infobox
Wikidata facts
- Image
- Brownmillerite-103177.jpg
Show 6 more facts
- Commons category
- Brownmillerite
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 4.AC.10
- Nickel-Strunz 9th edition (updated 2009)
- 4.AC.10
- IMA Mineral Symbol
- Bmlr
- chemical formula
- Ca₂(Al,Fe³⁺)₂O₅
- Strunz 8th edition (series ID, updated)
- IV/A.08
Sources (3)
via Wikidata · CC0
~2 min read
Encyclopedic overview
4 sectionsContents
- Discovery and occurrence
- Use as a catalyst
- See also
- References
Brownmillerite is a rare oxide mineral with chemical formula . It is named for Lorrin Thomas Brownmiller (1902–1990), chief chemist of the Alpha Portland Cement Company, Easton, Pennsylvania.
==Discovery and occurrence==
Excerpted from Wikipedia’s “brownmillerite” article, available under the CC BY-SA 4.0 licence.