Donate now to keep mindat.org alive!Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
The most common minerals on earthMineral PhotographyThe Elements and their Minerals
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Effenbergerite

This page is currently not sponsored. Click here to sponsor this page.
Prof. Herta Effenberger
Formula:
BaCuSi4O10
Colour:
blue
Lustre:
Vitreous
Hardness:
4 - 5
Specific Gravity:
3.51 - 3.57
Crystal System:
Tetragonal
Name:
Named after Prof. Dr. Herta S. Effenberger, mineralogist and crystallographer of the University of Vienna.
This page provides mineralogical data about Effenbergerite.


Hide all sections | Show all sections

Classification of EffenbergeriteHide

Approved
Approval Year:
1993
9.EA.05

9 : SILICATES (Germanates)
E : Phyllosilicates
A : Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings
71.2.3.3

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
2 : Sheets of 6-membered rings with 2:1 layers

Physical Properties of EffenbergeriteHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
blue
Streak:
light blue
Hardness:
4 - 5 on Mohs scale
Cleavage:
Perfect
parallel to {001}
Fracture:
Sub-Conchoidal
Density:
3.51 - 3.57 g/cm3 (Measured)    3.52 g/cm3 (Calculated)

Optical Data of EffenbergeriteHide

Type:
Uniaxial (-)
RI values:
nω = 1.633 nε = 1.593
Max Birefringence:
δ = 0.040
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Strong
Comments:
dark blue in O and pale blue to nearly colorless in E

Chemical Properties of EffenbergeriteHide

Formula:
BaCuSi4O10

Crystallography of EffenbergeriteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
P4/ncc
Cell Parameters:
a = 7.44 Å, c = 16.13 Å
Ratio:
a:c = 1 : 2.168
Unit Cell V:
892.85 ų (Calculated from Unit Cell)

Type Occurrence of EffenbergeriteHide

Synonyms of EffenbergeriteHide

Other Language Names for EffenbergeriteHide

Relationship of Effenbergerite to other SpeciesHide

Other Members of this group:
CuprorivaiteCaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
GillespiteBaFe2+Si4O10Tet.
WesselsiteSrCuSi4O10Tet.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Sugilite10 photos of Effenbergerite associated with Sugilite on mindat.org.
Scottyite8 photos of Effenbergerite associated with Scottyite on mindat.org.
Lavinskyite8 photos of Effenbergerite associated with Lavinskyite on mindat.org.
Pectolite5 photos of Effenbergerite associated with Pectolite on mindat.org.
Braunite3 photos of Effenbergerite associated with Braunite on mindat.org.
Wesselsite3 photos of Effenbergerite associated with Wesselsite on mindat.org.
Quartz1 photo of Effenbergerite associated with Quartz on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.EA.05CuprorivaiteCaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
9.EA.05GillespiteBaFe2+Si4O10Tet.
9.EA.05WesselsiteSrCuSi4O10Tet.
9.EA.10EkaniteCa2ThSi8O20Tet. 4 2 2 : I4 2 2
9.EA.15Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mnc
9.EA.15Hydroxyapophyllite-(K)KCa4(Si8O20)(OH,F) · 8H2OTet.
9.EA.15Fluorapophyllite-(Na)NaCa4(Si8O20)F · 8H2OOrth.
9.EA.20MagadiiteNa2Si14O29 · 11H2OMon.
9.EA.25DalyiteK2ZrSi6O15Tric.
9.EA.25DavaniteK2TiSi6O15Tric.
9.EA.30Sazhinite-(Ce)Na2CeSi6O14•6H2O
9.EA.30Sazhinite-(La)Na3La[Si6O15] · 2H2OOrth. mm2 : Pmm2
9.EA.35ArmstrongiteCaZr[Si6O15] · 3H2OMon.
9.EA.40OkeniteCa10Si18O46 · 18H2OTric. 1 : P1
9.EA.45NekoiteCa3Si6O15·7H2OTric. 1 : P1
9.EA.50CavansiteCa(VO)Si4O10 · 4H2OOrth. mmm (2/m 2/m 2/m)
9.EA.55PentagoniteCa(VO)Si4O10 · 4H2OOrth. mm2
9.EA.60PenkvilksiteNa4Ti2Si8O22 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
9.EA.60TumchaiteNa2Zr(Si4O11) · 2H2OMon.
9.EA.65NabesiteNa2BeSi4O10 · 4H2OOrth. 2 2 2 : P21 21 21
9.EA.70Ajoite(K,Na)Cu7AlSi9O24(OH)6 · 3H2OTric.
9.EA.75ZeravshaniteNa2Cs4Zr3[Si18O45]*2H2OMon. 2/m : B2/b
9.EA.80Bussyite-(Ce)(Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4Mon. 2/m : B2/b
9.EA.85PlumbophyllitePb2Si4O10 · H2OOrth. mmm (2/m 2/m 2/m) : Pbcn

Related Minerals - Dana Grouping (8th Ed.)Hide

71.2.3.1CuprorivaiteCaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
71.2.3.2GillespiteBaFe2+Si4O10Tet.
71.2.3.4ChromphylliteK(Cr,Al)2(AlSi3O10)(OH,F)2Mon. 2/m : B2/b

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for EffenbergeriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
New Minerals (1997), New Minerals 1990-1994.
Mineralogical Magazine: 58: 663-670.
Knight, K. S.; Henderson, C. M. B.; Clark, S. M. (2010): Structural variations in the wesselsite-effenbergerite (Sr1xBaxCuSi4O10) solid solution. European Journal of Mineralogy 22, 411-423.

Internet Links for EffenbergeriteHide

Localities for EffenbergeriteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
South Africa (TL)
 
  • Northern Cape Province
    • Kalahari manganese field
      • Hotazel
Giester, G., & Rieck, B. (1994). Effenbergerite BaCu [Si4010], a new mineral from the Kalahari manganese field, South Africa: description and crystal structure. Mineralogical Magazine, 58, 663-670.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2017, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: December 15, 2017 23:36:21 Page generated: December 14, 2017 15:30:01
Go to top of page