Late-stage mineral from residual intercumulus magma in the pyroxene, olivine-chromite, or plagioclase-rich layers of mafic intrusions.
IMA Status:
Approved IMA 1977
Locality:
Jimberlana intrusion, near Norseman, Western Australia. Link to MinDat.org Location Data.
Name Origin:
Named for John Francis Lovering (1930-), Australian geochemist, University of Melbourne, Melbourne, Australina, for his work on fission-track methods in geochemistry.
Anhedral Grains - Granular minerals without the expression of crystal shapes
Hardness:
7.5 - Garnet
Luster:
Metallic
Streak:
grayish black
Optical Properties of Loveringite
Optical Data:
Uniaxial (?).
NCalc= 2.35 - from Gladstone-Dale relationship (KC = 0.3081) where Ncalc=Dcalc*KC+1 NCalc= 2.36 - from Gladstone-Dale relationship (KC = 0.3081) where Ncalc=Dmeas*KC+1
RL Color:
White to grayish white.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Loveringite in Air
λ
R
∑ R(λ)
420 nm
18.20
440 nm
17.70
460 nm
17.40
480 nm
17.00
500 nm
16.80
520 nm
16.50
540 nm
16.40
560 nm
16.40
580 nm
16.50
600 nm
16.50
620 nm
16.50
640 nm
16.50
660 nm
16.50
680 nm
16.60
700 nm
16.50
Calculated Relative Intensity Colors of Loveringite in Air
Relative Intensity
0%
60%
100%
120%
180%
240%
300%
360%
420%
480%
530%
R
Calculated Properties of Loveringite
Electron Density:
Bulk Density (Electron Density)=4.15 gm/cc note: Specific Gravity of Loveringite =4.37 gm/cc.
Fermion Index:
Fermion Index = 0.06 Boson Index = 0.94
Photoelectric:
PELoveringite = 28.00 barns/electron U=PELoveringite x relectron= 116.08 barns/cc.
Radioactivity:
GRapi = 2,534.46 (Gamma Ray American Petroleum Institute Units)
Concentration of Loveringite per GRapi unit = 394.56 (PPM)
Estimated Radioactivity from Loveringite - 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 / 7.59 cm
56,099
1.52E-06
2,534.46
0.83
100 gm / 3.52 cm
5,610
1.52E-07
253.45
0.08
10 gm / 1.63 cm
561
1.52E-08
25.34
0.01
1 gm / 7.59 mm
56
1.52E-09
2.53
0.00
0.1 gm / 3.52 mm
6
1.52E-10
0.25
0.00
0.01 gm / 1.63 mm
1
1.52E-11
0.03
0.00
0.001 gm / 0.76 mm
0
1.52E-12
0.00
0.00
Weight of pure Loveringite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.37 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 ( 0.13 % Th) From Sum REE Elements ( 2.50 % REE)
Loveringite Classification
Dana Class:
08.05.01.02(08)Multiple Oxides with Nb, Ta, and Ti
Chemical Formula: 
- mild