Painite Mineral Data

General Painite Information

Chemical Formula:

CaZrB[Al9O18]

Composition:

Molecular Weight = 586.42 gm

Sodium 0.74 % Na 1.00 % Na₂O

Calcium 5.26 % Ca 7.36 % CaO

Zirconium 0.62 % Zr 0.84 % ZrO₂

Titanium 1.55 % Ti 2.59 % TiO₂

Aluminum 40.49 % Al 76.50 % Al₂O₃

Chromium 0.27 % Cr 0.35 % CrO

Boron 1.95 % B 6.29 % B₂O₃

Oxygen 49.11 % O

______ ______

100.00 % 94.94 % = TOTAL OXIDE

Empirical Formula:

Ca_0.77Na_0.19Al_8.8Ti_0.19Cr_0.03Zr_0.04B_1.06O₁₈

Environment:

From gem concentrates and low-silica metamorphic rocks.

IMA Status:

Valid Species (Pre-IMA) 1957

Locality:

Ohngaing, Mogok district, Sagaing, Myanmar. Link to MinDat.org Location Data.

Name Origin:

Named for A. C. D. Pain (-1971), British gem collector who first noticed the mineral.

Name Pronunciation:

Painite

Synonym:

ICSD 12136

PDF 10-405

Painite Image

Images:

Painite

Comments: Painite #12, is an orange-brown, 0.156 gram, transparent, uniaxial, gemmy crystal with one perfect termination.
Location: Ongaing village, Mogok region, Myanmar. Scale: Not Given.
© S Naung II

Painite Crystallography

Axial Ratios:

a:c = 1:0.97019

Cell Dimensions:

a = 8.724, c = 8.464, Z = 2; V = 557.88 Den(Calc)= 3.49

Crystal System:

Hexagonal - Dipyramidal H-M Symbol (6/m) Space Group: P 6₃/m

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

By Intensity(I/I_o): 2.52(1), 5.76(1), 3.7(0.8),

Physical Properties of Painite

Color:

Brownish, Brownish red, Orange red, Red.

Density:

4 - 4.03, Average = 4.01

Diaphaneity:

Transparent

Habit:

Hexagonal - Six-sided crystal shape in cross-section or habit.

Habit:

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

Hardness:

8 - Topaz

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Painite

Dichroism (e):

ruby red.

Dichroism (w):

pale brownish orange.

Gladstone-Dale:

CI meas= 0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.138 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2297,KPDmeas= 0.1997,KC= 0.2019
Ncalc = 1.7 - 1.81

Optical Data:

Uniaxial (-), e=1.787-1.789, w=1.815-1.816, bire=0.0270-0.0280.

Calculated Properties of Painite

Electron Density:

Bulk Density (Electron Density)=3.94 gm/cc
note: Specific Gravity of Painite =4.02 gm/cc.

Fermion Index:

Fermion Index = 0.0071519235
Boson Index = 0.9928480765

Photoelectric:

PE_Painite= 3.02 barns/electron
U=PE_Painite x rElectron Density= 11.89 barns/cc.

Radioactivity:

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

Painite Classification

Dana Class:

07.05.02.01 (07)Multiple Oxides

(07.05)where A B X2

(07.05.02)Dana Group

07.05.02.01 Painite CaZrB[Al9O18] P 6₃/m 6/m

Strunz Class:

06.AB.85 06 - BORATES

06.A - Monoborates

06.AB -BO3, with additional anions; 1(D) + OH, etc.

06.AB.85 Painite CaZrB[Al9O18] P 6₃/m 6/m

Other Painite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8, AmMin, v 89, p 610) OPTIC PROP.(Dana8)

See Also:

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

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

Painite

CaZrB[Al9O18]
Dana No: 07.05.02.01 Strunz No: 06.AB.85
Locality:

Notes:

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