Aksaite Mineral Data

Aksaite Mineral Data +

[Newest Minerals] [Minerals for Sale] [Tsumeb Mine] [Mineral Auctions] [Mineral Gallery]
The Mineral Gallery's Exceptional Specimens and Mineral Hall of Fame
Visa and Mastercard are Welcome

General Aksaite Information

Chemical Formula:

MgB6O7(OH)6·2(H2O)

Composition:

Molecular Weight = 339.24 gm

Magnesium 7.16 % Mg 11.88 % MgO

Boron 19.12 % B 61.57 % B₂O₃

Hydrogen 2.97 % H 26.55 % H₂O

Oxygen 70.74 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg(B₆O₇)(OH)₆·2(H₂O)

IMA Status:

Approved IMA 1962

Locality:

Kazakhstan, Chelkar, Ak-Sai Link to MinDat.org Location Data.

Synonym:

ICSD 15212

PDF 15-654

Search for Aksaite 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.

Aksaite Crystallography

Axial Ratios:

a:b:c =0.5149:1:0.3073

Cell Dimensions:

a = 12.54, b = 24.35, c = 7.484, Z = 8; V = 2,285.23 Den(Calc)= 1.97

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P bca

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

By Intensity(I/I_o): 6.4(1), 4.72(0.5), 6.1(0.5),

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

Dal Negro A , Ungaretti L , Sabelli C , American Mineralogist , 56 (1971) p.1553-1566, The crystal structure of aksaite

Physical Properties of Aksaite

Cleavage:

[???] Good

Color:

Colorless, Gray, Light gray.

Density:

1.99

Diaphaniety:

Transparent

Hardness:

2.5 - Finger Nail

Streak:

white

Optical Properties of Aksaite

Gladstone-Dale:

CI meas= -0.02 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.031 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.254,KPDmeas= 0.2514,KC= 0.2464

Optical Data:

Biaxial (-), a=1.472, b=1.503, g=1.526, bire=0.0540, 2V(Calc)=78, 2V(Meas)=80.

Calculated Properties of Aksaite

Electron Density:

r_electron=2.02 gm/cc
note: r_Aksaite=1.99 gm/cc.

Fermion Index

Fermion Index = 0.04555
Boson Index = 0.95445

Photoelectric:

PE_Aksaite= 0.46 barns/electron
U=PE_Aksaite x r_electron= 0.93 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Aksaite is Not Radioactive

Aksaite Classification

Dana Class:

26.6.4.1 (26)Hydrated Borates Containing Hydroxyl or Halogen

(26.6)Dana Type

(26.6.4)Dana Group

26.6.4.1 Aksaite MgB6O7(OH)6·2(H2O) P bca 2/m 2/m 2/m

Strunz Class:

V/H.17-30 V - Nitrates, Carbonates and Borates

V/H - Group borates. Planary and tetrahedral groups [B3O5]1- to [B6O10]2-

V/H.17 - Admontite - Rivadavite series

V/H.17-10 Admontite MgB6O10·7(H2O) P 2₁/c 2/m

V/H.17-20 Mcallisterite Mg2B12O14(OH)12·9(H2O) R 3c 3 2/m

V/H.17-30 Aksaite MgB6O7(OH)6·2(H2O) P bca 2/m 2/m 2/m

V/H.17-40 Rivadavite Na6MgB24O40·22(H2O) P 2₁/c 2/m

Other Aksaite Information

References:

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

See Also:

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

Search for Aksaite using:

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

Visit our Advertisers for Aksaite :
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 Aksaite Mineral Data :

Ask about Aksaite 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 Aksaite Specimen Label here :

Aksaite

MgB6O7(OH)6·2(H2O)
Dana No: 26.6.4.1 Strunz No: V/H.17-30
Locality:

Notes: