Mineralogy Database

Adamsite-(Y) Mineral Data

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General Adamsite-(Y) Information

Help on Chemical  Formula: Chemical Formula: NaY(CO3)2•6(H2O)
Help on Composition: Composition: Molecular Weight = 344.24 gm
   Sodium       6.68 %  Na    9.00 % Na2O
   Gadolinium   1.83 %  Gd    2.11 % Gd2O3
   Dysprosium   4.72 %  Dy    5.42 % Dy2O3
   Yttrium     18.08 %  Y    22.96 % Y2O3
   Erbium       2.43 %  Er    2.78 % Er2O3
   Hydrogen     3.51 %  H    31.40 % H2O
   Carbon       6.98 %  C    25.57 % CO2
   Oxygen      55.77 %  O
              ______        ______ 
              100.00 %       99.23 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaY0.7Dy0.1Er0.05Gd0.04(CO3)2•6(H2O)
Help on Environment: Environment: Late-stage, low-temperature hydrothermal phase within cavities in an alkaline pegmatite dike.
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: Poudrette quarry, Mont Saint-Hilaire, Quebec. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Professor Frank Dawson Adams (1859-1942) of McGill University, Montreal, Quebec.
Help on Synonym: Synonym: ICSD 90832
  IMA1999-020
 

Adamsite-(Y) Image

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  Adamsite-(Y)

Comments: Sprays of adamsite-(Y) crystals on matrix.
Location: Mt. St. Hilaire, Quebec, Canada. Scale: 1.5 cm.
© John Veevaert

Adamsite-(Y) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4799:1:1.0132
Help on Cell Dimensions: Cell Dimensions: a = 6.262, b = 13.047, c = 13.22, Z = 4; alpha = 91.17°, beta = 103.7°, gamma = 89.99° V = 1,049.13 Den(Calc)= 2.18
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 12.81(1)(001), 6.45(0.7)(002), 2.571(0.6)(005,043),4.29(0.6)(003), 4.456(0.6)(121,120,1202.05(0.5), 2.869(0.3), 3.267(0.25),
 

Physical Properties of Adamsite-(Y)

Help on Cleavage: Cleavage: {001} Perfect, {100} Good, {010} Good
Help on Color: Color: Colorless, White, Pale pink, Pale purple.
Help on Diaphaneity: Diaphaneity: Translucent to transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Adamsite-(Y)

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.036 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2369,KC= 0.2287
Ncalc = 1.5
Help on Optical Data: Optical Data: Biaxial (+), a=1.48, b=1.498, g=1.571, bire=0.0910
 

Calculated Properties of Adamsite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.16 gm/cc
note: Specific Gravity of Adamsite-(Y) =2.18 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEAdamsite-(Y) = 87.57 barns/electron
U=PEAdamsite-(Y) x relectron= 189.50 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 9,505.70 (Gamma Ray American Petroleum Institute Units)
Concentration of Adamsite-(Y) per GRapi unit = 105.20 (PPM)

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

Estimated Radioactivity from Adamsite-(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 / 9.57 cm 201,090 5.43E-06 9,505.70 3.13
100 gm / 4.44 cm 20,109 5.43E-07 950.57 0.31
10 gm / 2.06 cm 2,011 5.43E-08 95.06 0.03
1 gm / 9.57 mm 201 5.43E-09 9.51 0.00
0.1 gm / 4.44 mm 20 5.43E-10 0.95 0.00
0.01 gm / 2.06 mm 2 5.43E-11 0.10 0.00
0.001 gm / 0.96 mm 0 5.43E-12 0.01 0.00

Weight of pure Adamsite-(Y) in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.18 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 ( 0.45 % Th) From Sum REE Elements ( 8.98 % REE)
 

Adamsite-(Y) Classification

Help on  Dana Class: Dana Class: 15.04.08.01 (15)Hydrated Carbonates
  (15.04)Dana Type
  (15.04.08)Dana Group
 
15.04.08.01 Adamsite-(Y)! NaY(CO3)2•6(H2O) P1 1
Help on  Strunz Class: Strunz Class: 05.CC.30 05 - CARBONATES (NITRATES)
  05.C - Carbonates without Additional Anions, with H2O
  05.CC -With rare-earth elements (REE)
 
05.CC.30 Adamsite-(Y)! NaY(CO3)2•6(H2O) P1 1
 

Other Adamsite-(Y) Information

Help on References: References: NAME( AmMin, Vol 86, p1112) PHYS. PROP.(AmMin, Vol 86, p1112) OPTIC PROP.(AmMin, Vol 86, p1112)
Help on See Also: See Also: Links to other databases for Adamsite-(Y) :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - WWW-MINCRYST

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Adamsite-(Y)

NaY(CO3)2•6(H2O)
Dana No: 15.04.08.01 Strunz No: 05.CC.30
Locality:

 

Notes:

 

 
   
 


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