Jarandolite Mineral Data

General Jarandolite Information

Chemical Formula:

Ca[B3O4(OH)3]

Composition:

Molecular Weight = 187.28 gm

Calcium 21.83 % Ca 30.54 % CaO

Silicon 0.15 % Si 0.32 % SiO₂

Boron 17.26 % B 55.57 % B₂O₃

Hydrogen 1.50 % H 13.42 % H₂O

Chlorine 0.19 % Cl 0.19 % Cl

- % Cl -0.04 % -O=Cl₂

Oxygen 59.07 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca_1.02B_2.99Si_0.01O_4.12(OH)_2.79Cl_0.01

Environment:

Mixed volcanic-sedimentary deposits with borate deposits occuring predominantly in the tuffaceous deposits and have thicknesses from 1 to 12 m. Structurally and chemically similar t o colemanite.

IMA Status:

Approved IMA 2006 (Dana # Added)

Locality:

Pobrdjski Potok and Piskanja in the Jarandol lacustrine basin (Miocene), 280 km south from Belgrade, Serbia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

IMA1995-020a

Serbianite

Srbianite

Jarandolite Crystallography

Axial Ratios:

a:b:c =1.0299:1:0.8903

Cell Dimensions:

a = 8.386, b = 8.142, c = 7.249, Z = 4; beta = 98.33° V = 489.73 Den(Calc)= 2.54

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/a

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

By Intensity(I/I_o): 3.39(1)(201 ), 4.32(0.57)(111 ), 3.13(0.5)(211 ),1.849(0.25)(421,420), 2.606(0.25)(221 ), 2.93(0.23)(202 ), 2.287(0.19)(320 ), 2.36(0.17)(311 ),

Physical Properties of Jarandolite

Cleavage:

{001} Perfect

Color:

Colorless, White.

Diaphaneity:

Transparent to Translucent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

6 - Orthoclase

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Jarandolite

Gladstone-Dale:

CI calc= -0.016 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2343,KC= 0.2305
Ncalc = 1.59

Optical Data:

Biaxial (+), a=1.573, b=1.586, g=1.626, bire=0.0530, 2V(Calc)=62, 2V(Meas)=60. Dispersion medium, r > v.

Calculated Properties of Jarandolite

Electron Density:

Bulk Density (Electron Density)=2.54 gm/cc
note: Specific Gravity of Jarandolite =2.54 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_Jarandolite= 2.92 barns/electron
U=PE_Jarandolite x rElectron Density= 7.42 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Jarandolite is Not Radioactive

Jarandolite Classification

Dana Class:

25.03.06.01 (25)Anhydrous Borates Containing Hydroxyl or Halogen

(25.03)Dana Type

(25.03.06)Dana Group

25.03.06.01 Jarandolite! Ca[B3O4(OH)3] P 2₁/a 2/m

Strunz Class:

06.CB.25 06 - BORATES

06.C - Triborates

06.CB -Ino-triborates

06.CB.25 Jarandolite! Ca[B3O4(OH)3] P 2₁/a 2/m

Other Jarandolite Information

References:

NAME( AmMin, v 91, p217) PHYS. PROP.(AmMin, v 91, p217) OPTIC PROP.(AmMin, v 91, p217)

See Also:

Links to other databases for Jarandolite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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

Jarandolite

Ca[B3O4(OH)3]
Dana No: 25.03.06.01 Strunz No: 06.CB.25
Locality:

Notes:

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