Isostructural with calzirtite. In a skarn assemblage resulted from metasomatic reactions affecting a felsic volcanic rock, followed by high-grade metamorphism in an environment of h igh f(O2 ) and silica undersaturation.
IMA Status:
Approved IMA 1995 (Dana # Added)
Locality:
The Langban iron-manganese deposit, Langban, Filipstad district, Varmland, Sweden. Link to MinDat.org Location Data.
Name Origin:
Named after Urban Hiarne (1641-1724), a pioneer in Swedish geology.
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Habit:
Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape.
Hardness:
7 - Quartz
Optical Properties of Hiarneite
Gladstone-Dale:
CI meas= 0.09 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0.044 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2201,KPDmeas= 0.2096,KC= 0.2303 Ncalc = 2.19 - 2.25
Optical Data:
Uniaxial (+), w=2.12, e=2.16, bire=0.0400.
RL Anisotrophism:
Weak.
RL Color:
Colorless to gray.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Hiarneite in Air
λ
R1
R2
∑ R1(λ)
∑ R2(λ)
460 nm
13.10
14.00
540 nm
12.80
13.50
580 nm
12.80
13.50
640 nm
12.80
13.40
Calculated Relative Intensity Colors of Hiarneite in Air
Relative Intensity
0%
70%
100%
140%
210%
280%
350%
420%
490%
560%
630%
690%
R1
R2
Calculated Properties of Hiarneite
Electron Density:
Bulk Density (Electron Density)=4.76 gm/cc note: Specific Gravity of Hiarneite =5.18 gm/cc.
Fermion Index:
Fermion Index = 0.03 Boson Index = 0.97
Photoelectric:
PEHiarneite = 98.73 barns/electron U=PEHiarneite x rElectron Density= 470.15 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hiarneite is Not Radioactive
Hiarneite Classification
Dana Class:
08.07.04.02(08)Multiple Oxides with Nb, Ta, and Ti
Chemical Formula: 
