Chlorocalcite Mineral Data

General Chlorocalcite Information

Chemical Formula:

KCaCl3

Composition:

Molecular Weight = 185.53 gm

Potassium 21.07 % K 25.39 % K₂O

Calcium 21.60 % Ca 30.22 % CaO

Chlorine 57.33 % Cl 57.33 % Cl

- % Cl -12.94 % -O=Cl₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

KCaCl₃

Environment:

Volcanic sublimate.

IMA Status:

Valid Species (Pre-IMA) 1872

Locality:

Mt. Vesuvius, Campania, Italy. Link to MinDat.org Location Data.

Name Origin:

Named for the composition, which was originally thought to be chloride of calcium alone.

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Chlorocalcite Crystallography

Axial Ratios:

a:b:c =0.7246:1:0.6958

Cell Dimensions:

a = 7.551, b = 10.42, c = 7.251, Z = 4; V = 570.52 Den(Calc)= 2.16

Crystal System:

OrthorhombicSpace Group: Unk

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

By Intensity(I/I_o): 2.61(1), 3.14(0.4), 2.11(0.3),3.12(0.3), 3.7(0.3), 5.23(0.3), 2.38(0.2), 3.06(0.2),

Physical Properties of Chlorocalcite

Cleavage:

{001} Perfect, {010} Good, {100} Good

Color:

Colorless, White, Light violet.

Diaphaneity:

Transparent

Habit:

Deliquescent - Crystals absorb water from the air and melt or otherwise deteriorate.

Habit:

Pseudo Cubic - Crystals show a cubic outline.

Habit:

Tastes Bitter - Bitter taste from water soluble Mg or Ca compounds.

Hardness:

2.5-3 - Finger Nail-Calcite

Streak:

white

Optical Properties of Chlorocalcite

Optical Data:

Biaxial (?), b=1.52

Calculated Properties of Chlorocalcite

Electron Density:

Bulk Density (Electron Density)=2.10 gm/cc
note: Specific Gravity of Chlorocalcite =2.16 gm/cc.

Fermion Index:

Fermion Index = 0.0003169067
Boson Index = 0.9996830933

Photoelectric:

PE_{Chlorocalcite}= 8.61 barns/electron
U=PE_{Chlorocalcite} x r_electron= 18.04 barns/cc.

Radioactivity:

GRapi = 294.98 (Gamma Ray American Petroleum Institute Units)
Concentration of Chlorocalcite per GRapi unit = 0.34 (%)

Estimated Radioactivity from Chlorocalcite - barely detectable

Chlorocalcite Classification

Dana Class:

11.01.03.01 (11)Halide Complexes; Alumino-fluorides

(11.01)where (A)m B (X)3

(11.01.03)Dana Group

11.01.03.01 Chlorocalcite KCaCl3 Unk Ortho

Strunz Class:

03.AA.40 03 - HALIDES

03.A - Simple Halides, Without H2O

03.AA -M:X = 1:1, 2:3, 3:5, etc.

03.AA.40 Chlorocalcite KCaCl3 Unk Ortho

Other Chlorocalcite Information

References:

NAME( Dana8) PHYS. PROP.(Larousse des Mineraux,1981) OPTIC PROP.(Larousse des Mineraux,1981)

See Also:

Links to other databases for Chlorocalcite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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

Chlorocalcite

KCaCl3
Dana No: 11.01.03.01 Strunz No: 03.AA.40
Locality:

Notes: