Kaliophilite Mineral Data

Kaliophilite Mineral Data +

General Kaliophilite Information

Chemical Formula:

KAlSiO4

Composition:

Molecular Weight = 158.16 gm

Potassium 24.72 % K 29.78 % K₂O

Aluminum 17.06 % Al 32.23 % Al₂O₃

Silicon 17.76 % Si 37.99 % SiO₂

Oxygen 40.46 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

KAlSiO₄

IMA Status:

Valid Species (Pre-IMA) 1886

Locality:

Ejecta from Mte. Somma, Vesuvius. Link to MinDat.org Location Data.

Synonym:

Facellite

Phacellite

Kaliophilite Image

Images:

Click Here for Larger Kaliophilite Image

Kaliophilite Meionite

Comments: Tan to white fibrous kaliophilite crystal bundle with white translucent meionite on matrix.
Location: Mont Somma, Naples, Campania, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kaliophilite Crystallography

Axial Ratios:

a:c = 1:0.31645

Cell Dimensions:

a = 26.93, c = 8.522, Z = 54; V = 5,352.36 Den(Calc)= 2.65

Crystal System:

Hexagonal - TrapezohedralH-M Symbol (6 2 2) Space Group: P 6₃22

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

By Intensity(I/I_o): 3.09(1), 2.593(0.3), 2.131(0.25),

Physical Properties of Kaliophilite

Cleavage:

[0001] Perfect

Color:

Colorless.

Density:

2.49 - 2.67, Average = 2.58

Diaphaniety:

Transparent to translucent

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

5.5-6 - Knife Blade-Orthoclase

Luster:

Vitreous - Greasy

Streak:

white

Optical Properties of Kaliophilite

Gladstone-Dale:

CI meas= -0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.021 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1998,KPDmeas= 0.2052,KC= 0.2041

Optical Data:

Uniaxial (-), e=1.527, w=1.532, bire=0.0050.

Calculated Properties of Kaliophilite

Electron Density:

r_electron=2.54 gm/cc
note: r_Kaliophilite=2.58 gm/cc.

Fermion Index

Fermion Index = 0.00851
Boson Index = 0.99149

Photoelectric:

PE_Kaliophilite= 3.65 barns/electron
U=PE_Kaliophilite x r_electron= 9.30 barns/cc.

Radioactivity:

GRapi = 351.79 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Kaliophilite - barely detectable

Kaliophilite Classification

Dana Class:

76.2.1.5 (76)Tectosilicate Al-Si Framework

(76.2)Feldspathoids and related species

(76.2.1)Nepheline group

76.2.1.1 Kalsilite KAlSiO4 P 3₁c 3m

76.2.1.2 Nepheline (Na,K)AlSiO4 P 6₃ 6

76.2.1.3 Trikalsilite (K,Na)AlSiO4 P 6₃ 6

76.2.1.4 Panunzite (K,Na)AlSiO4 P 6₃ 6

76.2.1.5 Kaliophilite KAlSiO4 P 6₃22 6 2 2

76.2.1.6 Yoshiokaite (Ca8-(x/2)[](x/2)Al16-xSixO32) P 3 3

76.2.1.7 Megakalsilite! KAlSiO4 P 6₃ 6

Strunz Class:

VIII/J.02-50 VIII - Silicates

VIII/J - Tectosilicates (network) without anions unfamiliar to the tetraheders

VIII/J.02 - Nepheline - Yoshiokaite series

VIII/J.02-10 Nepheline (Na,K)AlSiO4 P 6₃ 6

VIII/J.02-20 Kalsilite KAlSiO4 P 3₁c 3m

VIII/J.02-25 Megakalsilite! KAlSiO4 P 6₃ 6

VIII/J.02-30 Trikalsilite (K,Na)AlSiO4 P 6₃ 6

VIII/J.02-40 Panunzite (K,Na)AlSiO4 P 6₃ 6

VIII/J.02-50 Kaliophilite KAlSiO4 P 6₃22 6 2 2

VIII/J.02-60 Yoshiokaite (Ca8-(x/2)[](x/2)Al16-xSixO32) P 3 3

VIII/J.02-70 Malinkoite! NaBSiO4 P 6₃ 6

Other Kaliophilite Information

References:

NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

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

Kaliophilite

KAlSiO4
Dana No: 76.2.1.5 Strunz No: VIII/J.02-50
Locality:

Notes: