Penobsquisite Mineral Data (original) (raw)

General Penobsquisite Information

Help on Chemical Formula: Chemical Formula:

Ca2Fe++[B9O13(OH)6]Cl•4(H2O)

Help on Composition: Composition:

Molecular Weight = 650.84 gm

Calcium 12.32 % Ca 17.23 % CaO

Iron 8.58 % Fe 11.04 % FeO

Boron 14.95 % B 48.13 % B2O3

Hydrogen 2.17 % H 19.38 % H2O

Chlorine 5.45 % Cl 5.45 % Cl

- % Cl -1.23 % -O=Cl2

Oxygen 56.54 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Ca2Fe2+B9O13(OH)6Cl•4(H2O)

Help on Environment: Environment:

Upper Halite member of the evaporite sequence.

Help on IMA Status: IMA Status:

Approved IMA 1994 (Dana # Added)

Help on Locality: Locality:

Potash Corporation of Saskatchewan (New Brunswick Division) mine at Penobsquis, Kings County, New Brunswick, Canada. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named after the locality.

Help on Name Pronunciation: Name Pronunciation:

Penobsquisite + Pronunciation Say PENOBSQUISITE

Help on Synonym: Synonym:

ICSD 82484

IMA1995-014

PDF 49-1868

Penobsquisite Image

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Penobsquisite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =1.2398:1:0.9312

Help on Cell Dimensions: Cell Dimensions:

a = 11.63, b = 9.38, c = 8.735, Z = 2; beta = 98.4° V = 942.67 Den(Calc)= 2.29

Help on Crystal System: Crystal System:

Monoclinic - SphenoidalH-M Symbol (2) Space Group: P 21

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 7.29(1)(110), 2.113(0.3)(114), 8.65(0.3)(001),2.958(0.3)(320,312,031), 4.5(0.2)(211), 5.32(0.2)(111),

Click Here for Large Penobsquisite Structure Window Crystal Structure:

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| | Grice J D , Gault R A , Van Velthuizen J , The Canadian Mineralogist , 34 (1996) p.657-665, Penobsquisite: A new borate mineral with a complex framework structure | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Penobsquisite

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Pale yellow.

Help on Density: Density:

2.26

Help on Diaphaneity: Diaphaneity:

Transparent to Translucent

Help on Fracture: Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Help on Habit: Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Help on Hardness: Hardness:

3 - Calcite

Help on Luster: Luster:

Vitreous (Glassy)

Help on Streak: Streak:

white

Optical Properties of Penobsquisite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= -0.027 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2469,KPDmeas= 0.2501,KC= 0.2435
Ncalc = 1.55 - 1.56

Help on Optical Data: Optical Data:

Biaxial (+/-), a=1.55, b=1.554, g=1.592, bire=0.0420

Calculated Properties of Penobsquisite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.29 gm/cc
note: Specific Gravity of Penobsquisite =2.29 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Help on Photoelectric: Photoelectric:

PEPenobsquisite = 4.57 barns/electron
U=PEPenobsquisite x rElectron Density= 10.48 barns/cc.

Help on Radioactivity: Radioactivity:

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

Penobsquisite Classification

Help on Dana Class: Dana Class:

26.05.17.04 (26)Hydrated Borates Containing Hydroxyl or Halogen

(26.05)Dana Type

(26.05.17)Pringleite Group

26.05.17.01 Pringleite Ca9B26O34(OH)24Cl4•13(H2O) P1 1

26.05.17.02 Ruitenbergite Ca9B26O34(OH)24Cl4•13(H2O) P 21 2

26.05.17.03 Brianroulstonite! Ca3[B5O6(OH)6](OH)Cl2•8(H2O) Pa m

26.05.17.04 Penobsquisite! Ca2Fe[B9O13(OH)6]Cl•4(H2O) P 21 2

26.05.17.05 Walkerite! Ca16(Mg,Li,[])2[B13O17(OH)12]4Cl6•28(H2O) Pba2 mm2

Help on Strunz Class: Strunz Class:

06.GB.10 06 - BORATES

06.G - Heptaborates and other Megaborates

06.GB -Phyllo-nonborates, etc.

06.GB.10 Penobsquisite! Ca2Fe[B9O13(OH)6]Cl•4(H2O) P 21 2

Other Penobsquisite Information

Help on References: References:

NAME( CanMin) PHYS. PROP.(Eur. J. Min.,Vol.8,1996) OPTIC PROP.(Eur. J. Min.,Vol.8,1996)

Help on See Also: See Also:

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

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Ask about Penobsquisite here :
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Print or Cut-and-Paste your Penobsquisite Specimen Label here :

Penobsquisite

Ca2Fe++[B9O13(OH)6]Cl•4(H2O)
Dana No: 26.05.17.04 Strunz No: 06.GB.10
Locality:

Notes: