Calcybeborosilite-(Y) Mineral Data


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General Calcybeborosilite-(Y) Information
Help on Chemical Formula: Chemical Formula: (REE,Ca)2[ ](B,Be)2(SiO4)2(OH,O)2
Help on Composition: Composition: Molecular Weight = 437.09 gm
   Calcium           9.17 %  Ca   12.83 % CaO
   La,Ce,Pr,Nd,Sm,  32.95 %  RE   38.44 % REE2O3
   Beryllium         1.24 %  Be    3.43 % BeO
   Iron              3.83 %  Fe    4.93 % FeO
   Silicon          12.85 %  Si   27.49 % SiO2
   Boron             2.97 %  B     9.56 % B2O3
   Hydrogen          0.32 %  H     2.89 % H2O
   Oxygen           36.24 %  O
   Fluorine          0.43 %  F     0.43 % F
                      -   %   F    -0.18 % -O=F2
                   ______        ______ 
                   100.00 %       99.82 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: REECaFe2+0.3B1.2Be0.6Si2O8.5(OH)1.4F0.1
Help on Environment: Environment: Paleozoic alkaline granites intruding Silurian-aged rocks with a high content of boron. Probable intermediate composition between dataolite and hingginite-(Ce).
Help on IMA Status: IMA Status: Not Approved IMA 1963 (Dana # Added)
Help on Locality: Locality: Dara-i-Pioz massif on the southern slope of the Altai Range in Tajikistan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after it's composition of calcium, beryllium, boron and silicon.
Help on Synonym: Synonym: Calcybeborosilite
  Yttrian Datolite
 

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Calcybeborosilite-(Y) Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.2955:1:0.6271
Help on Cell Dimensions: Cell Dimensions: a = 9.846, b = 7.6, c = 4.766, Z = 2; beta = 90.11° V = 356.64 Den(Calc)= 4.07
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.84(1)(121), 3.12(1)(211), 2.84(0.85)(121),3.12(0.8)(211), 2.54(0.7)(311), 2.97(0.7)(021), 3.42(0.45)(201),
 

Physical Properties of Calcybeborosilite-(Y)

Help on Luster: Luster: Vitreous - Greasy
 

Optical Properties of Calcybeborosilite-(Y)

Help on Optical Data: Optical Data: NCalc= 1.74 - from Gladstone-Dale relationship (KC = 0.1823) where Ncalc=Dcalc*KC+1
 

Calculated Properties of Calcybeborosilite-(Y)

Help on Electron Density: Electron Density:

relectron=3.85 gm/cc
note: rCalcybeborosilite-(Y) =4.07 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.08668
Boson Index = 0.91332
Help on Photoelectric: Photoelectric:

PECalcybeborosilite-(Y) = 200.26 barns/electron
U=PECalcybeborosilite-(Y) x relectron= 770.90 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 33,356.54 (Gamma Ray American Petroleum Institute Units)

Calcybeborosilite-(Y) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 911.87 ±227.97 grams of pure Calcybeborosilite-(Y) .

Estimated Radioactivity from Calcybeborosilite-(Y) - weak
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 / 7.77 cm 740,625 2.00E-05 33,356.54 10.97
100 gm / 3.61 cm 74,063 2.00E-06 3,335.65 1.10
10 gm / 1.67 cm 7,406 2.00E-07 333.57 0.11
1 gm / 7.77 mm 741 2.00E-08 33.36 0.01
0.1 gm / 3.61 mm 74 2.00E-09 3.34 0.00
0.01 gm / 1.67 mm 7 2.00E-10 0.33 0.00
0.001 gm / 0.78 mm 1 2.00E-11 0.03 0.00

Weight of pure Calcybeborosilite-(Y) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.07 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 ( 1.65 % Th) From Sum REE Elements (32.95 % REE)
 

Calcybeborosilite-(Y) Classification
Help on Dana Class: Dana Class: 54.2.1a.5 (54)Nesosilicate Borosilicates and Some Beryllosilicates
  (54.2)with B in [4] coordination
  (54.2.1a)Datolite group (Datolite series)
 
54.2.1a.1 Datolite CaBSiO4(OH) P 21/c 2/m
 
54.2.1a.2 Hingganite-(Ce) Ce2Be2(SiO4)2(OH)2 P 21/a 2/m
 
54.2.1a.3 Hingganite-(Y) Y2([])Be2Si2O8(OH)2 P 21/a 2/m
 
54.2.1a.4 Hingganite-(Yb) (Yb,Y)2([])Be2Si2O8(OH)2 P 21/a 2/m
 
54.2.1a.5 Calcybeborosilite-(Y) ! (REE,Ca)2[](B,Be)2(SiO4)2(OH,O)2 P 21/a 2/m
Help on Strunz Class: Strunz Class: VIII/B.29-100 VIII - Silicates
  VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, with beryllium and boron
  VIII/B.29 - Datolite/Gadolinite group
 
VIII/B.29-10 Datolite CaBSiO4(OH) P 21/c 2/m
 
VIII/B.29-20 Bakerite Ca4B4(BO4)(SiO4)3(OH)3·(H2O) P 21/c 2/m
 
VIII/B.29-30 Homilite Ca2(Fe,Mg)B2Si2O10 P 21/a 2/m
 
VIII/B.29-35 Vistepite Mn4SnB2(SiO4)4(OH)2 P1 1
 
VIII/B.29-40 Minasgeraisite-(Y) CaY2Be2Si2O10 P 21/a 2/m
 
VIII/B.29-50 Gadolinite-(Y) Y2FeBe2Si2O10 P 21/a 2/m
 
VIII/B.29-60 Gadolinite-(Ce) (Ce,La,Nd,Y)2FeBe2Si2O10 P 21/c 2/m
 
VIII/B.29-70 Hingganite-(Y) Y2([])Be2Si2O8(OH)2 P 21/a 2/m
 
VIII/B.29-80 Hingganite-(Ce) Ce2Be2(SiO4)2(OH)2 P 21/a 2/m
 
VIII/B.29-90 Hingganite-(Yb) (Yb,Y)2([])Be2Si2O8(OH)2 P 21/a 2/m
 
VIII/B.29-100 Calcybeborosilite-(Y) (REE,Ca)2[](B,Be)2(SiO4)2(OH,O)2 P 21/a 2/m
 

Other Calcybeborosilite-(Y) Information
Help on References: References: NAME( AmMin, Vol 86, p 1537) PHYS. PROP.(List of New Min. Names,28-33th,1974-1984)
Help on See Also: See Also: Links to other databases for Calcybeborosilite-(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

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

Calcybeborosilite-(Y)

(REE,Ca)2[ ](B,Be)2(SiO4)2(OH,O)2
Dana No: 54.2.1a.5 Strunz No: VIII/B.29-100
Locality:

 

Notes:

 
 
   
 
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