Kalborsite Mineral Data

Kalborsite Mineral Data +

[Newest Minerals] [Rare Minerals] [Past Sale Items] [About Us] [A-Rocks Auctions]
T G Fine Minerals sells Australian Minerals from all the classic and current localities
We are one the most comprehensive sellers of these (Aussie) minerals in the world
Broken Hill specimens are our specialty along with fine worldwide minerals, Australian opals, fossils & gems

General Kalborsite Information

Chemical Formula:

K6Al4Si6BO20(OH)4Cl

Composition:

Molecular Weight = 989.63 gm

Potassium 23.70 % K 28.55 % K₂O

Aluminum 10.91 % Al 20.61 % Al₂O₃

Silicon 17.03 % Si 36.43 % SiO₂

Boron 1.53 % B 4.92 % B₂O₃

Hydrogen 0.41 % H 3.64 % H₂O

Chlorine 3.58 % Cl 3.58 % Cl

- % Cl -0.81 % -O=Cl₂

Oxygen 42.84 % O

______ ______

100.00 % 96.93 % = TOTAL OXIDE

Empirical Formula:

K₆Al₄Si₆B_1.4O_22.5(OH)₄Cl

Environment:

Rims around lovozeroite in segregations of petolite, in richorrite pegmatite from a differentiated alkalic massif.

IMA Status:

Approved IMA 1980

Locality:

Mount Rasvumchorr, Khibiny massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the composition (KAllium, ALuminum,BORate, and SIlicon).

Synonym:

ICSD 34580

PDF 33-999

Search for Kalborsite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Kalborsite Crystallography

Axial Ratios:

a:c = 1:1.32575

Cell Dimensions:

a = 9.851, c = 13.06, Z = 2; V = 1,267.37 Den(Calc)= 2.59

Crystal System:

Tetragonal - ScalenohedralH-M Symbol (4 2m) Space Group: P 42m

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

By Intensity(I/I_o): 3.08(1), 2.79(0.9), 3.44(0.8),2.94(0.8), 2.08(0.5), 2.24(0.5), 3.26(0.5),

Physical Properties of Kalborsite

Cleavage:

[110] Perfect

Color:

Brownish pink, Colorless.

Density:

2.5

Diaphaniety:

Transparent

Habit:

Epitaxial - Crystallographic alignment with a precursor mineral

Hardness:

6 - Orthoclase

Luster:

Vitreous - Pearly

Streak:

white

Optical Properties of Kalborsite

Gladstone-Dale:

CI meas= -0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2027,KPDmeas= 0.21,KC= 0.2087

Optical Data:

Uniaxial (+), w=1.525, e=1.525, bire=0.0000.

Calculated Properties of Kalborsite

Electron Density:

r_electron=2.48 gm/cc
note: r_Kalborsite=2.50 gm/cc.

Fermion Index

Fermion Index = 0.01122
Boson Index = 0.98878

Photoelectric:

PE_Kalborsite= 3.61 barns/electron
U=PE_Kalborsite x r_electron= 8.93 barns/cc.

Radioactivity:

GRapi = 338.72 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Kalborsite - barely detectable

Kalborsite Classification

Dana Class:

77.2.7.1 (77)Tectosilicate Zeolite group

(77.2)related species

(77.2.7)Dana Group

77.2.7.1 Kalborsite K6Al4Si6BO20(OH)4Cl P 42m 4 2m

Strunz Class:

VIII/J.13-40 VIII - Silicates

VIII/J - Tectosilicates (network) with anions unfamiliar to the tetraheders

VIII/J.13 - Sodalite group, Marialite - Kalborsite series

VIII/J.13-10 Marialite Na4Al3Si9O24Cl I 4/m 4/m

VIII/J.13-20 Meionite Ca4Al6Si6O24CO3 P 4/m 4/m

VIII/J.13-25 Silvialite! (Ca,Na)4Al6Si6O24(SO4,CO3) I 4/m 4/m

VIII/J.13-30 Sarcolite NaCa6Al4Si6O24F(?) I 4/m 4/m

VIII/J.13-40 Kalborsite K6Al4Si6BO20(OH)4Cl P 42m 4 2m

Other Kalborsite Information

References:

NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)

Search for Kalborsite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Kalborsite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Kalborsite Mineral Data :

Ask about Kalborsite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Kalborsite Specimen Label here :

Kalborsite

K6Al4Si6BO20(OH)4Cl
Dana No: 77.2.7.1 Strunz No: VIII/J.13-40
Locality:

Notes: