Kochsandorite  Mineral Data

Kochsandorite Mineral Data

Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images       News Help About



[Localities] [Carat Weight] [Special Collections] [Diamond Lots] [Ordering Info]
See Also: [Excalibur Minerals] [Mineral News] [Hudson Institute] [Minerals on CDROM]
Special Collections of Rough Diamonds for Researchers and Collectors
Unparalled diversity of specimens from different locations


General Kochsandorite Information

Help on Chemical  Formula: Chemical Formula: CaAl2(CO3)2(OH)4•H2O
Help on Composition: Composition: Molecular Weight = 295.50 gm
   Calcium   12.21 %  Ca   17.08 % CaO
   Aluminum  18.26 %  Al   34.50 % Al2O3
   Hydrogen   2.25 %  H    20.12 % H2O
   Carbon     7.72 %  C    28.30 % CO2
   Oxygen    59.56 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.9Al2(CO3)1.9(OH)4•1.3(H2O)
Help on Environment: Environment: Formed from the weathering of böhmite, pyrite, and calcite and occur as spherical aggregates that form pale brown strings in Eocene brown coal deposits. Dresserite group.
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Mány coal deposit, Tatabánya, Hungary Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Sándor Koch, (1896-1983), professor in the Department of Mineralogy, Petrography and Geochemistry Josef Atilla University.
Help on Synonym: Synonym: IMA2004-037
 

Kochsandorite Image

Click Here for Larger Kochsandorite Image in a New Browser Window Images:
Click Here for Larger Kochsandorite Image

Kochsandorite

Comments: Pearly circles of radiating white microcrystals of kochsandorite on coal.
Location: Many coal deposit, Bicske-Zsambeki Basin, Tatabanya. Scale: 2.5x1.7x1.1 cm.
© Richard Dale / Dale Minerals

Click Here for Larger Kochsandorite Image in a New Browser Window Images:
Click Here for Larger Kochsandorite Image

Kochsandorite

Comments: White fibers of kochandorite on coal-marl matrix.
Location: Mány coal field, Tatabánya, Hungary. Scale: See Image.
© Jeff Weissman / Photographic Guide to Mineral Species

Kochsandorite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.7837:1:1.6297
Help on Cell Dimensions: Cell Dimensions: a = 15.564, b = 5.591, c = 9.112, Z = 4; V = 792.91 Den(Calc)= 2.48
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P nma
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.9154(1)(201), 7.8607(0.87)(101), 4.3718(0.858)(102),7.783(0.678)(200), 2.957(0.476)(402), 2.9455(0.44)(501), 1.9021(0.257)(620), 2.5687(0.17)(502), 3.5772(0.149)(401),
 

Physical Properties of Kochsandorite

Help on Cleavage: Cleavage: None
Help on Color: Color: White.
Help on Density: Density: 2.486
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: white
 

Optical Properties of Kochsandorite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.025 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.028 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2419,KPDmeas= 0.2414,KC= 0.2354
Ncalc = 1.58 - 1.59
Help on Optical Data: Optical Data: Biaxial (-), a=1.597, g=1.603, bire=0.0060
 

Calculated Properties of Kochsandorite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.52 gm/cc
note: Specific Gravity of Kochsandorite =2.49 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0013035512
Boson Index = 0.9986964488
Help on Photoelectric: Photoelectric: PEKochsandorite = 2.17 barns/electron
U=PEKochsandorite x rElectron Density= 5.47 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kochsandorite is Not Radioactive
 

Kochsandorite Classification

Help on  Dana Class: Dana Class: 16b.02.01.05 (16b)Carbonates - Hydroxyl or Halogen
  (16b.02)where (A)m (B)n (XO3)p Zq · x(H2O), with (m+n):p=3:2
  (16b.02.01)Dundasite Group
 
16b.02.01.01 Dundasite PbAl2(CO3)2(OH)4•(H2O) Pbmm 2/m 2/m 2/m
 
16b.02.01.02 Dresserite BaAl2(CO3)2(OH)4•(H2O) Pbmm 2/m 2/m 2/m
 
16b.02.01.03 Strontiodresserite (Sr,Ca)Al2(CO3)2(OH)4•(H2O) Pbmm 2/m 2/m 2/m
 
16b.02.01.04 Petterdite! PbCr2(CO3)2(OH)4•H2O Pbnm 2/m 2/m 2/m
 
16b.02.01.05 Kochsandorite! CaAl2(CO3)2(OH)4•H2O P nma 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 05.DB.10 05 - CARBONATES (NITRATES)
  05.D - Carbonates with Additional Anions, with H2O
  05.DB -With large and medium-sized cations
 
05.DB.10 Dresserite BaAl2(CO3)2(OH)4•(H2O) Pbmm 2/m 2/m 2/m
 
05.DB.10 Dundasite PbAl2(CO3)2(OH)4•(H2O) Pbmm 2/m 2/m 2/m
 
05.DB.10 Kochsandorite! CaAl2(CO3)2(OH)4•H2O P nma 2/m 2/m 2/m
 
05.DB.10 Strontiodresserite (Sr,Ca)Al2(CO3)2(OH)4•(H2O) Pbmm 2/m 2/m 2/m
 
05.DB.10 Petterdite! PbCr2(CO3)2(OH)4•H2O Pbnm 2/m 2/m 2/m
 

Other Kochsandorite Information

Help on References: References: NAME( AmMin, v92:1777) PHYS. PROP.(AmMin, v92:1777) OPTIC PROP.(AmMin, v92:1777)
Help on See Also: See Also: Links to other databases for Kochsandorite :
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
10 - Ruff.Info

Search for Kochsandorite using:

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

Visit our Advertisers for Kochsandorite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

Heliodor

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Kochsandorite Mineral Data :

Ask about Kochsandorite 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 Kochsandorite Specimen Label here :

Kochsandorite

CaAl2(CO3)2(OH)4•H2O
Dana No: 16b.02.01.05 Strunz No: 05.DB.10
Locality:

 

Notes: