Chlormagaluminite Mineral Data

Chlormagaluminite 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 Chlormagaluminite Information

Chemical Formula:

(Mg,Fe++)4Al2(OH)12(Cl2,CO3)·2(H2O)

Composition:

Molecular Weight = 472.53 gm

Magnesium 18.00 % Mg 29.85 % MgO

Aluminum 11.42 % Al 21.58 % Al₂O₃

Iron 5.91 % Fe 7.60 % FeO

Hydrogen 3.41 % H 30.50 % H₂O

Carbon 1.27 % C 4.66 % CO₂

Chlorine 7.50 % Cl 7.50 % Cl

- % Cl -1.69 % -O=Cl₂

Oxygen 52.48 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg_3.5Fe²⁺_0.5Al₂(OH)₁₂Cl(CO₃)_0.5·2(H₂O)

Environment:

In skarns associated with magnetite and chlorite.

IMA Status:

Approved IMA 1982

Locality:

Kapaev explosion pipe, Angara River, southern Siberian Platform, Russia. Link to MinDat.org Location Data.

Name Origin:

Named after its composition (Chloride, Magnesium, Aluminum).

Synonym:

Chlormanasseite

Search for Chlormagaluminite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Chlormagaluminite Crystallography

Axial Ratios:

a:c = 1:2.92249

Cell Dimensions:

a = 5.29, c = 15.46, Z = 1; V = 374.67 Den(Calc)= 2.09

Crystal System:

HexagonalSpace Group: P 6/mcm, P 6cm, P 6c2

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

By Intensity(I/I_o): 1.839(1), 7.67(1), 2.34(0.9),

Physical Properties of Chlormagaluminite

Cleavage:

[0001] Good

Color:

Colorless, Yellow brown.

Density:

1.98 - 2.09, Average = 2.03

Diaphaniety:

Transparent

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Hexagonal - Six-sided crystal shape in cross-section or habit.

Habit:

Pyramidal - Crystals are shaped like pyramids.

Hardness:

1.5-2.5 - Hardness very near Gypsum

Luster:

Pearly

Streak:

white

Optical Properties of Chlormagaluminite

Gladstone-Dale:

CI meas= -0.056 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.028 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2632,KPDmeas= 0.2703,KC= 0.2559

Optical Data:

Uniaxial (+), w=1.54, e=1.56, bire=0.0200.

Calculated Properties of Chlormagaluminite

Electron Density:

r_electron=2.13 gm/cc
note: r_{Chlormagaluminite}=2.09 gm/cc.

Fermion Index

Fermion Index = 0.01965
Boson Index = 0.98035

Photoelectric:

PE_{Chlormagaluminite}= 2.99 barns/electron
U=PE_{Chlormagaluminite} x r_electron= 6.37 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Chlormagaluminite is Not Radioactive

Chlormagaluminite Classification

Dana Class:

10.6.10.1 (10)Oxyhalides and Hydroxyhalides

(10.6)where Am Bn (O,OH)p Xq

(10.6.10)Dana Group

10.6.10.1 Chlormagaluminite (Mg,Fe)4Al2(OH)12(Cl2,CO3)·2(H2O) P 6/mcm, P 6cm, P 6c2 Hex

Strunz Class:

V/E.02-20 V - Nitrates, Carbonates and Borates

V/E - Water-bearing carbonates with unfamiliar anions

V/E.02 - Manasseite group

V/E.02-05 Quintinite-2H Mg4Al2(OH)12CO3·4(H2O) P 6₃22 6 2 2

V/E.02-05* Quintinite-3T Mg4Al2(OH)12CO3·4(H2O) P 3₁12,P 3₂12 3 2

V/E.02-07 Caresite Fe4Al2(OH)12CO3·3(H2O) P 3₁12 or P 3₂12 3 2

V/E.02-08 Charmarite-2H Mn4Al2(CO3)(OH)12·3(H2O) P 6₃22 6 2 2

V/E.02-08* Charmarite-3T Mn4Al2(CO3)(OH)12·3(H2O) P 3₁12 3 2

V/E.02-09 Zaccagnaite! Zn4Al2(OH)12(CO3)·3(H2O) P 6₃/mmc 6/m 2/m 2/m

V/E.02-10 Manasseite Mg6Al2(CO3)(OH)16·4(H2O) P 6₃/mmc 6/m 2/m 2/m

V/E.02-20 Chlormagaluminite (Mg,Fe)4Al2(OH)12(Cl2,CO3)·2(H2O) P 6/mcm, P 6cm, P 6c2 Hex

V/E.02-30 Barbertonite Mg6Cr2(CO3)(OH)16·4(H2O) P 6₃/mmc 6/m 2/m 2/m

V/E.02-40 Sjogrenite Mg6Fe2(CO3)(OH)14·5(H2O) P 6₃/mmc 6/m 2/m 2/m

Other Chlormagaluminite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Chlormagaluminite :
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 -Athena 5 - EUROmin Project 6 -Google Images 7 -Google Scholar 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 -École des Mines de Paris

Search for Chlormagaluminite using:

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

Visit our Advertisers for Chlormagaluminite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Chlormagaluminite Mineral Data :

Ask about Chlormagaluminite 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 Chlormagaluminite Specimen Label here :

Chlormagaluminite

(Mg,Fe++)4Al2(OH)12(Cl2,CO3)·2(H2O)
Dana No: 10.6.10.1 Strunz No: V/E.02-20
Locality:

Notes: