Lagmannsvik, Hamar�y, Nordland, Norway (holotype), Kr�kmo, Hamar�y, Nordland, Norway (cotype), Vyuntspakhk Mountain, Western Keivy, Kola Peninsula, Russia (cotype). Link to MinDat.org Location Data.
Name Origin:
Commission on New Minerals, Nomenclature and Classification (CNMNC)
IMA2009-005 Crystallography
Axial Ratios:
a:c = 1:0.72184
Cell Dimensions:
a = 9.4437, c = 6.8169, Z = 2; V = 526.50 Den(Calc)= 4.39
NCalc= 1.79 - from Gladstone-Dale relationship (KC = 0.1795) where Ncalc=Dcalc*KC+1
Calculated Properties of IMA2009-005
Electron Density:
Bulk Density (Electron Density)=4.10 gm/cc note: Specific Gravity of IMA2009-005 =4.39 gm/cc.
Fermion Index:
Fermion Index = 0.02 Boson Index = 0.98
Photoelectric:
PEIMA2009-005 = 112.48 barns/electron U=PEIMA2009-005 x relectron= 461.35 barns/cc.
Radioactivity:
GRapi = 10,342.76 (Gamma Ray American Petroleum Institute Units)
Concentration of IMA2009-005 per GRapi unit = 96.69 (PPM)
IMA2009-005 is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.
Estimated Radioactivity from IMA2009-005 - 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 / 7.58 cm
232,473
6.28E-06
10,342.76
3.40
100 gm / 3.52 cm
23,247
6.28E-07
1,034.28
0.34
10 gm / 1.63 cm
2,325
6.28E-08
103.43
0.03
1 gm / 7.58 mm
232
6.28E-09
10.34
0.00
0.1 gm / 3.52 mm
23
6.28E-10
1.03
0.00
0.01 gm / 1.63 mm
2
6.28E-11
0.10
0.00
0.001 gm / 0.76 mm
0
6.28E-12
0.01
0.00
Weight of pure IMA2009-005 in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.39 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 ( 0.52 % Th) From Sum REE Elements (10.34 % REE)
Chemical Formula: 
- weak