Effenbergerite Explained
|
| Smiles: | [Ba+2].[Cu+2].Si12([O-])OSi3([O-])OSi(O1)([O-])OSi(O2)(O3)([O-]) |
| Formula: | BaCuSi4O10 |
| Molweight: | 473.21 |
| Strunz: | 09.EA.05 |
| Dana: | 71.02.03.03 |
| System: | tetragonal |
| Class: | P4/ncc |
| Colour: | blue |
| Luster: | vitreous |
| Streak: | pale blue |
| Diaphaneity: | transparent |
| Density: | 3.57 - 3.52 |
| Opticalprop: | Uniaxial (-) |
| Refractive: | e=1.593, w=1.633 |
Effenbergerite is the natural occurrence of the color Han blue.It was first found in the Wessels mine, Kalahari Manganese Field,[1] South Africa.[2] Effenbergerite was approved as a valid mineral species by the IMA in 1993.[3]
Effenberergite has the chemical formula .[4]
The mineral was named after Dr. Herta S. Effenberger, a mineralogist and crystallographer at the University of Vienna.
External links
- https://rruff.info/Effenbergerite
- http://database.iem.ac.ru/mincryst/s_carta.php?EFFENBERGERITE
- https://www.google.com/search?q=Effenbergerite&tbm=isch
- http://rruff.geo.arizona.edu/AMS/result.php?mineral=Effenbergerite
- https://mineralogy-ima.org/
Notes and References
- Web site: The Kalahari Manganese Fields Cape Minerals . www.capeminerals.co.za.
- Giester . G. . Rieck . B. . Effenbergerite, BaCu[Si4O10], a new mineral from the Kalahari Manganese Field, South Africa: description and crystal structure ]. Mineralogical Magazine . December 1994 . 58 . 393 . 663–670 . 10.1180/minmag.1994.058.393.17 . 1994MinM...58..663G . 56047566 . en . 0026-461X.
- Web site: Effenbergerite . www.mindat.org.
- Web site: Effenbergerite Mineral Data . webmineral.com.
