Ellenbergerite Mineral Data

[Thumbnails] [Miniatures] [Cabinets] [About Us] [FAQ]
Welcome To Mason's Minerals
Your Source for Beautiful Minerals and Crystals
We offer a no-questioned-asked Satisfaction Guarantee

General Ellenbergerite Information

Chemical Formula:

Mg6TiAl6Si8O28(OH)10

Composition:

Molecular Weight = 1,198.34 gm

Magnesium 12.17 % Mg 20.18 % MgO

Titanium 4.00 % Ti 6.67 % TiO₂

Aluminum 13.51 % Al 25.53 % Al₂O₃

Silicon 18.75 % Si 40.11 % SiO₂

Hydrogen 0.84 % H 7.52 % H₂O

Oxygen 50.73 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg₆TiAl₆Si₈O₂₈(OH)₁₀

Environment:

As inclusions in pyrope porphyroblasts developed during high-pressure (25-30 kbar), medium-temperature (700 ±C{800 ±C) metamorphism of continental crustal rocks.

IMA Status:

Approved IMA 1986

Locality:

Dora-Maira massif, Parigi, near Martiniana Po, Piedmont, Italy. Link to MinDat.org Location Data.

Name Origin:

Named for Francois Ellenberger, Paris, France, for his geological work in the western Alps.

Name Pronunciation:

Ellenbergerite + Pronunciation

Synonym:

ICSD 66681

PDF 40-507

Ellenbergerite Image

Images:

Ellenbergerite

Comments: Pale pink glassy nearly pure mass of ellenbergerite.
Location: Dora-Meira Massif, Parigi, Piemonte, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ellenbergerite Crystallography

Axial Ratios:

a:c = 1:0.40244

Cell Dimensions:

a = 12.255, c = 4.932, Z = 1; V = 641.48 Den(Calc)= 3.10

Crystal System:

Hexagonal - PyramidalH-M Symbol (6) Space Group: P 6₃

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.54(0.75), 2.653(0.7), 3.06(0.55),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Comodi P , Zanazzi P F , European Journal of Mineralogy , 5 (1993) p.819-829, Structural study of ellenbergerite. Part 1: Effects of high temperature, Sample: I, T = 20 deg C

View Additional jPOWD Structure files for Ellenbergerite
[1] [2] [3] [4] [5]

Physical Properties of Ellenbergerite

Cleavage:

None

Color:

Colorless, Purple, Lilac.

Density:

3.15 - 3.22, Average = 3.18

Diaphaneity:

Transparent

Hardness:

6.5 - Pyrite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Ellenbergerite

Gladstone-Dale:

CI meas= 0.087 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.062 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2143,KPDmeas= 0.2086,KC= 0.2284
Ncalc = 1.71 - 1.74

Optical Data:

Uniaxial (-), e=1.6538-1.6697, w=1.6553-1.6789, bire=0.0015-0.0092.

Calculated Properties of Ellenbergerite

Electron Density:

Bulk Density (Electron Density)=3.09 gm/cc
note: Specific Gravity of Ellenbergerite =3.10 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Ellenbergerite}= 2.04 barns/electron
U=PE_{Ellenbergerite} x rElectron Density= 6.32 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ellenbergerite is Not Radioactive

Ellenbergerite Classification

Dana Class:

52.04.10.01 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O

(52.04)with cations in [6] and/or > [6] coordination

(52.04.10)Dana Group

52.04.10.01 Ellenbergerite Mg6TiAl6Si8O28(OH)10 P 6₃ 6

Strunz Class:

09.AF.80 09 - SILICATES (Germanates)

09.A - Nesosilicates

09.AF -Nesosilicates with additional anions;

09.AF.80 Ellenbergerite Mg6TiAl6Si8O28(OH)10 P 6₃ 6

Other Ellenbergerite Information

References:

NAME( AntBidBlaNic2) PHYS. PROP.(Bull.Miner.,Vol.107-111,1984-1988) OPTIC PROP.(Bull.Miner.,Vol.107-111,1984-1988)

See Also:

Links to other databases for Ellenbergerite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - Minerals in Thin Section-University of North Carolina
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

Search for Ellenbergerite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Ellenbergerite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Diamond Dan Publications

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Ellenbergerite Mineral Data :

Ask about Ellenbergerite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Ellenbergerite Specimen Label here :

Ellenbergerite

Mg6TiAl6Si8O28(OH)10
Dana No: 52.04.10.01 Strunz No: 09.AF.80
Locality:

Notes: