Tegengrenite Mineral Data

Tegengrenite Mineral Data

[What's New] [Mineral Galleries] [Sale Items] [About Us] [Contacts]
At AA Mineral Specimens, we source quality Mineral Specimens, Fossils, Gemstones,
Decorative Stones, Lapidary Material and Specimen Sets world-wide

General Tegengrenite Information

Chemical Formula:

(Mg,Mn++)2Sb+++++0.5(Mn+++,Si,Ti)0.5O4

Composition:

Molecular Weight = 219.12 gm

Magnesium 13.31 % Mg 22.07 % MgO

Titanium 0.87 % Ti 1.46 % TiO₂

Manganese 25.07 % Mn 25.90 % MnO / 7.21 % Mn₂O₃

Zinc 2.98 % Zn 3.71 % ZnO

Silicon 0.77 % Si 1.65 % SiO₂

Antimony 27.78 % Sb 36.91 % Sb₂O₅

Oxygen 29.21 % O

______ ______

100.00 % 98.90 % = TOTAL OXIDE

Empirical Formula:

Mg_1.2Mn²⁺_0.8Zn_0.1Sb_0.5Mn³⁺_0.2Si_0.06Ti_0.04O₄

Environment:

In a manganese-iron deposit in marble. Related to the spinal group

IMA Status:

Approved IMA 1999 (Dana # Added)

Locality:

Jokobsberg Fe-Mn deposit, Varmland, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named for Felix Tegengren (1884-1980), a renowned Finlandic-Swedish economic geologist who wrote about the ore deposits of Sweden and China.

Synonym:

IMA1999-002

Tegengrenite Image

Images:

Tegengrenite

Comments: Red, pseudo-octahedral crystal of tegengrenite in quartz.
Location: Jakobsberg, Nordmark, Filipstad, V?rmland, Sweden. Scale: Picture size 0.8 mm.
© Thomas Witzke / Abraxas-Verlag

Tegengrenite Crystallography

Axial Ratios:

a:c = 1:0.92294

Cell Dimensions:

a = 16.196, c = 14.948, Z = 42; V = 3,395.70 Den(Calc)= 4.50

Crystal System:

TrigonalSpace Group: R 3 or R 3-

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

By Intensity(I/I_o): 2.608(1)(241,143,125), 3.052(0.33)(140,214), 1.6652(0.3)(363,075),1.5273(0.29)(428), 2.162(0.28)(244), 1.5313(0.26)(820), 4.98(0.2)(211,003),

Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: [ 2 0 1] [ 0 0 1]

Warning: this large pop-up is very compute intensive and may not work well with some computers.

Physical Properties of Tegengrenite

Cleavage:

None

Color:

Dark red.

Diaphaniety:

Translucent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Habit:

Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape.

Luster:

Subadamantine

Calculated Properties of Tegengrenite

Electron Density:

r_electron=4.17 gm/cc
note: r_Tegengrenite=4.50 gm/cc.

Fermion Index

Fermion Index = 0.01616
Boson Index = 0.98384

Photoelectric:

PE_Tegengrenite= 96.81 barns/electron
U=PE_Tegengrenite x r_electron= 404.06 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Tegengrenite is Not Radioactive

Tegengrenite Classification

Dana Class:

7.2.13.2 (7)Multiple Oxides

(7.2)(A+ B++)2 X4 Spinel group

(7.2.13)Dana Group

7.2.13.1 Filipstadite (Mn,Mg)4SbFeO8 pseudo ISO 2/m 2/m 2/m

7.2.13.2 Tegengrenite ! (Mg,Mn)2Sb0.5(Mn,Si,Ti)0.5O4 R 3 or R 3- Trig

Strunz Class:

IV/B.05-65 IV - Oxides

IV/B - Oxides with metal : oxygen = 3:4 (spinel type M3O4 and related)

IV/B.05 - Hausmannite - Filipstadite series

IV/B.05-10 Hausmannite MnMn2O4 I 4₁/amd 4/m 2/m 2/m

IV/B.05-20 Iwakiite Mn(Fe,Mn)2O4 P 4₁/nnm 4/m 2/m 2/m

IV/B.05-30 Donathite? (Fe,Mg)(Cr,Fe)2O4 P 4/nnm 4/m 2/m 2/m

IV/B.05-40 Hetaerolite ZnMn2O4 I 4₁/amd 4/m 2/m 2/m

IV/B.05-50 Hydrohetaerolite Zn2Mn4O8·(H2O) I 4₁/amd 4/m 2/m 2/m

IV/B.05-60 Marokite CaMn2O4 Pmab 2/m 2/m 2/m

IV/B.05-65 Tegengrenite (Mg,Mn)2Sb0.5(Mn,Si,Ti)0.5O4 R 3 or R 3- Trig

IV/B.05-80 Filipstadite (Mn,Mg)4SbFeO8 pseudo ISO 2/m 2/m 2/m

Other Tegengrenite Information

References:

NAME( MinRec, Vol 32, p 419) PHYS. PROP.(MinRec, Vol 32, p 419)

See Also:

Links to other databases for Tegengrenite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

Search for Tegengrenite using:

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

Visit our Advertisers for Tegengrenite :

AA Mineral Specimens

B & L Fine Minerals

Crystal Vaults

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

MineralsWeb Fine Minerals

Rockshop.cz

T G Fine Minerals

Wrights Rock Shop

Translate Tegengrenite Mineral Data :

Ask about Tegengrenite 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 Tegengrenite Specimen Label here :

Tegengrenite

(Mg,Mn++)2Sb+++++0.5(Mn+++,Si,Ti)0.5O4
Dana No: 7.2.13.2 Strunz No: IV/B.05-65
Locality:

Notes: