Kapitsaite-(Y) Mineral Data

Kapitsaite-(Y) Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images       News Help About


Dakota Matrix
[Newest Minerals] [Rare Minerals] [Cabinet Specimens] [About Us] [Image Gallery]
Dakota Matrix Minerals
Updated weekly, for the collector, educator, and researcher since 1996
Extensive Inventory of very Rare Minerals. Visa and Mastercard are Welcome


General Kapitsaite-(Y) Information

Help on Chemical Formula: Chemical Formula: (Ba,K,Pb,Na)4(Y,Ca,REE)2[Si8B2(B,Si)2O28F]
Help on Composition: Composition: Molecular Weight = 1,419.80 gm
   Potassium         0.83 %  K     1.00 % K2O
   Barium           33.85 %  Ba   37.80 % BaO
   Sodium            0.16 %  Na    0.22 % Na2O
   Calcium           1.98 %  Ca    2.76 % CaO
   La,Ce,Pr,Nd,Sm,   2.03 %  RE    2.37 % REE2O3
   Yttrium           6.26 %  Y     7.95 % Y2O3
   Silicon          16.42 %  Si   35.12 % SiO2
   Boron             2.66 %  B     8.58 % B2O3
   Lead              2.92 %  Pb    3.14 % PbO
   Oxygen           31.55 %  O
   Fluorine          1.34 %  F     1.34 % F
                      -   %   F    -0.56 % -O=F2    
                   ______        ______ 
                   100.00 %       99.72 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba3.5K0.3Pb0.2YCa0.7Na0.1REE0.2Si8.3B3.5O28F
Help on Environment: Environment: Found in a boulder of perialkaline pegmatite. The Y-dominant analogue of hyalotekite.
Help on IMA Status: IMA Status: Approved IMA 1998, Dana # Added
Help on Locality: Locality: Moraine of the Dara-i-Pioz glacier in the Alaiskii mountain range, Tien-Shan, northern Tajikistan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for P. L. Kapitsa (1894-1984), Russian physicist.
Help on Synonym: Synonym: IMA1998-057
 

Search for Kapitsaite-(Y) Images

Click Here To Search 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.
  

Kapitsaite-(Y) Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.0305:1:0.9448
Help on Cell Dimensions: Cell Dimensions: a = 11.181, b = 10.85, c = 10.252, Z = 2; alpha = 90.64°, beta = 90.05°, gamma = 89.97° V = 1,243.63 Den(Calc)= 3.79
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: I1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.77(1)(202), 2.9(0.9)(312), 2.93(0.8)(321,231), 3.24(0.75)(013), 3.73(0.7)(300), 7.8(0.7)(110),
Click Here for Large Kapitsaite-(Y) Structure Window 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


Sokolova E V , Ferraris G , Ivaldi G , Pautov L A , Khvorov P V , Neues Jahrbuch fur Mineralogie, Monatshefte , 2000 (2000) p.74-84, Crystal structure of kapitsaite-(Y), a new borosilicate isotypic with, hyalotekite - Crystal chemistry of the related isomorphous series, Locality: Dara-i-Pioz glacier, Alaiskii mountain range, Tien-Shan,, Garmskii district, Northern Tajikistan

 

Physical Properties of Kapitsaite-(Y)

Help on Cleavage: Cleavage: None
Help on Color: Color: Light pink, White.
Help on Density: Density: 3.74
Help on Diaphaneity: Diaphaneity: Semitransparent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Wheat Sheaf - Bundle shaped aggregates resembling wheat sheafs after hand reaping wheat.
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Kapitsaite-(Y)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.007 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.02 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1661,KPDmeas= 0.1684,KC= 0.1695
Ncalc = 1.63 - 1.64
Help on Optical Data: Optical Data: Biaxial (+), a=1.624, b=1.628, g=1.637, bire=0.0130, 2V(Calc)=68, 2V(Meas)=69. Dispersion r < v moderate.
 

Calculated Properties of Kapitsaite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.43 gm/cc
note: Specific Gravity of Kapitsaite-(Y) =3.74 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.08
Boson Index = 0.92
Help on Photoelectric: Photoelectric: PEKapitsaite-(Y) = 218.41 barns/electron
U=PEKapitsaite-(Y) x relectron= 749.19 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 2,002.54 (Gamma Ray American Petroleum Institute Units)
Concentration of Kapitsaite-(Y) per GRapi unit = 499.37 (PPM)

Estimated Radioactivity from Kapitsaite-(Y) - mild
Specimen
Size
Weight/Volume
(Sphere) *		 Calculated
Activity
Bequerols
(Bq)		 Calculated
Activity
Curies (Ci)		 Estimated
Activity
GR(api)		 Estimated
Exposure
(mRem**)/hr
If Held in Hand
For One Hour
1000 gm / 7.99 cm 45,851 1.24E-06 2,002.54 0.66
100 gm / 3.71 cm 4,585 1.24E-07 200.25 0.07
10 gm / 1.72 cm 459 1.24E-08 20.03 0.01
1 gm / 7.99 mm 46 1.24E-09 2.00 0.00
0.1 gm / 3.71 mm 5 1.24E-10 0.20 0.00
0.01 gm / 1.72 mm 0 1.24E-11 0.02 0.00
0.001 gm / 0.80 mm 0 1.24E-12 0.00 0.00

Weight of pure Kapitsaite-(Y) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.74 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 0.10 % Th) From Sum REE Elements ( 2.03 % REE)
 

Kapitsaite-(Y) Classification
Help on Dana Class: Dana Class: 78.06.01.02 (78)Unclassified silicates
  (78.06)possible tectosilicates
  (78.06.01)Dana Group
 
78.06.01.01 Hyalotekite (Ba,Pb,Ca,K)6(B,Si,Al)2(Si,Be)10O28(F,Cl) I1 1
 
78.06.01.02 Kapitsaite-(Y)! (Ba,K,Pb,Na)4(Y,Ca,REE)2[Si8B2(B,Si)2O28F] I1 1
Help on Strunz Class: Strunz Class: 09.CH.05 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CH -[Si4O12]8- 4-membered double rings
 
09.CH.05 Hyalotekite (Ba,Pb,Ca,K)6(B,Si,Al)2(Si,Be)10O28(F,Cl) I1 1
 
09.CH.05 Kapitsaite-(Y)! (Ba,K,Pb,Na)4(Y,Ca,REE)2[Si8B2(B,Si)2O28F] I1 1
 

Other Kapitsaite-(Y) Information
Help on References: References: NAME( AmMin, vol 86, p 768) PHYS. PROP.(AmMin, Vol 86, p 1535) OPTIC PROP.(CanMin, Vol 38)
Help on See Also: See Also: Links to other databases for Kapitsaite-(Y) :
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 Kapitsaite-(Y) using:

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

Visit our Advertisers for Kapitsaite-(Y) :

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 Kapitsaite-(Y) Mineral Data :

Ask about Kapitsaite-(Y) 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 Espaņol

Print or Cut-and-Paste your Kapitsaite-(Y) Specimen Label here :

Kapitsaite-(Y)

(Ba,K,Pb,Na)4(Y,Ca,REE)2[Si8B2(B,Si)2O28F]
Dana No: 78.06.01.02 Strunz No: 09.CH.05
Locality:

 

Notes: