Kulanite Mineral Data

Kulanite Mineral Data +

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General Kulanite Information

Chemical Formula:

Ba(Fe++,Mn,Mg)2Al2(PO4)3(OH)3

Composition:

Molecular Weight = 637.65 gm

Barium 21.54 % Ba 24.05 % BaO

Magnesium 0.76 % Mg 1.26 % MgO

Manganese 5.17 % Mn 6.67 % MnO

Aluminum 8.46 % Al 15.99 % Al₂O₃

Iron 11.39 % Fe 14.65 % FeO

Phosphorus 14.57 % P 33.39 % P₂O₅

Hydrogen 0.47 % H 4.24 % H₂O

Oxygen 37.64 % O

______ ______

100.00 % 100.25 % = TOTAL OXIDE

Empirical Formula:

BaFe²⁺_1.3Mn²⁺_0.6Mg_0.2Al₂(PO₄)₃(OH)₃

Environment:

Cavities in phosphate-rich shales. Forms a series with penikisite.

IMA Status:

Approved IMA 1976

Locality:

Rapid Creek (Cross Cut Creek), Big Fish River, Yukon Territories, Canada. Link to MinDat.org Location Data.

Name Origin:

Named for Alan Kulan (1921-1977), prospector who found the first specimen.

Synonym:

ICSD 79136

IMA1975-012

PDF 29-170

Kulanite Image

Images:

Kulanite

Comments: White apatite crystals to 0.5 cm in length and abundant, bladed, deep olive green crystals (see inset image) of kulanite.
Location: Rapid Creek, Yukon Territory, Canada. Scale: 4.3 x 3.2 cm.
© John Veevaert

Kulanite Crystallography

Axial Ratios:

a:b:c =0.7465:1:0.4079

Cell Dimensions:

a = 9.014, b = 12.074, c = 4.926, Z = 2; beta = 100.48° V = 527.18 Den(Calc)= 4.02

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.108(1), 2.927(0.8), 3.044(0.7),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
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Help on Above

Cooper M A , Hawthorne F C , The Canadian Mineralogist , 32 (1994) p.15-19, Refinement of the crystal structure of kulanite, Note: occupancies of M1 and M2 have been switched, as agreed upon by the authors, 2006

Physical Properties of Kulanite

Cleavage:

[010] Good, [100] Good

Color:

Blue, Blue green, Green, Black green.

Density:

3.91

Diaphaniety:

Transparent to Translucent

Habit:

Rosette - Bundled tabular aggregates resembling rose flower petals.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

4 - Fluorite

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Adamantine

Streak:

greenish white

Optical Properties of Kulanite

Gladstone-Dale:

CI meas= 0.005 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1767,KPDmeas= 0.1817,KC= 0.1826

Optical Data:

Biaxial (+), a=1.703, b=1.705, g=1.723, bire=0.0200, 2V(Calc)=38, 2V(Meas)=32. Dispersion r >> v strong.

Pleochroism (x):

brown green.

Pleochroism (y):

green.

Pleochroism (z):

pale brown.

Calculated Properties of Kulanite

Electron Density:

r_electron=3.69 gm/cc
note: r_Kulanite=3.91 gm/cc.

Fermion Index

Fermion Index = 0.04173
Boson Index = 0.95827

Photoelectric:

PE_Kulanite= 97.24 barns/electron
U=PE_Kulanite x r_electron= 359.18 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kulanite is Not Radioactive

Kulanite Classification

Dana Class:

41.9.1.1 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.9)where (A B)5 (XO4)3 Zq

(41.9.1)Dana Group

41.9.1.1 Kulanite Ba(Fe,Mn,Mg)2Al2(PO4)3(OH)3 P 2₁/m 2/m

41.9.1.2 Penikisite BaMg2Al2(PO4)3(OH)3 P1 1

41.9.1.3 Bjarebyite (Ba,Sr)(Mn,Fe,Mg)2Al2(PO4)3(OH)3 P 2₁/m 2/m

41.9.1.4 Perloffite Ba(Mn,Fe)2Fe2(PO4)3(OH)3 P 2₁/m 2/m

41.9.1.5 Johntomaite! Ba(Fe,Ca,Mn)2Fe2(PO4)3(OH)3 P 2₁/m 2/m

Strunz Class:

VII/B.29-20 VII - Phosphates, Arsenates and Vanadates

VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of medium and big size: Mg, Cu, Zn, and Ca, Na, K, Ba, Pb

VII/B.29 - Bjarebyite group

VII/B.29-10 Penikisite BaMg2Al2(PO4)3(OH)3 P1 1

VII/B.29-20 Kulanite Ba(Fe,Mn,Mg)2Al2(PO4)3(OH)3 P 2₁/m 2/m

VII/B.29-30 Bjarebyite (Ba,Sr)(Mn,Fe,Mg)2Al2(PO4)3(OH)3 P 2₁/m 2/m

VII/B.29-35 Johntomaite! Ba(Fe,Ca,Mn)2Fe2(PO4)3(OH)3 P 2₁/m 2/m

VII/B.29-40 Perloffite Ba(Mn,Fe)2Fe2(PO4)3(OH)3 P 2₁/m 2/m

VII/B.29-50 Jagowerite BaAl2(PO4)2(OH)2 P1 1

VII/B.29-60 Vesignieite Cu3Ba(VO4)2(OH)2 C 2/m 2/m

VII/B.29-70 Drugmanite Pb2(Fe,Al)H(PO4)2(OH)2 P 2₁/a 2/m

VII/B.29-80 Mounanaite PbFe2(VO4)2(OH)2 P1 1

Other Kulanite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

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Kulanite

Ba(Fe++,Mn,Mg)2Al2(PO4)3(OH)3
Dana No: 41.9.1.1 Strunz No: VII/B.29-20
Locality:

Notes: