Ericaite Mineral Data (original) (raw)

General Ericaite Information

Help on Chemical Formula: Chemical Formula:

(Fe++,Mg,Mn)3B7O13Cl

Help on Composition: Composition:

Molecular Weight = 458.00 gm

Magnesium 4.78 % Mg 7.92 % MgO

Manganese 3.60 % Mn 4.65 % MnO

Iron 21.95 % Fe 28.24 % FeO

Boron 16.52 % B 53.20 % B2O3

Chlorine 7.74 % Cl 7.74 % Cl

- % Cl -1.75 % -O=Cl2

Oxygen 45.41 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Fe2+1.8Mg0.9Mn2+0.3B7O13Cl

Help on Environment: Environment:

Forms a series with boracite.

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) 1950

Help on Locality: Locality:

Wathlingen-Hanigsen, Hannover, Germany. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for the purple color of flowers from the genus Erica (Heather).

Help on Name Pronunciation: Name Pronunciation:

Ericaite Say ERICAITE

Help on Synonym: Synonym:

ICSD 9290 (Mg)

PDF 26-780

Ericaite Image

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Ericaite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.9873:1:1.4004

Help on Cell Dimensions: Cell Dimensions:

a = 8.58, b = 8.69, c = 12.17, Z = 4; V = 907.40 Den(Calc)= 3.35

Help on Crystal System: Crystal System:

Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: P ca21

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.04(1), 2.06(0.7), 2.72(0.6),2.15(0.5), 1.83(0.4), 3.51(0.4), 1.24(0.3), 1.47(0.2),

Physical Properties of Ericaite

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Purple, Light green, Red, Black, Brown.

Help on Density: Density:

3.22

Help on Diaphaneity: Diaphaneity:

Transparent

Help on Fracture: Fracture:

Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.

Help on Habit: Habit:

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

Help on Habit: Habit:

Pseudo Cubic - Crystals show a cubic outline.

Help on Hardness: Hardness:

7-7.5 - Quartz-Garnet

Help on Luster: Luster:

Vitreous (Glassy)

Help on Streak: Streak:

white

Optical Properties of Ericaite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= -0.069 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.028 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.223,KPDmeas= 0.232,KC= 0.2169
Ncalc = 1.7 - 1.73

Help on Optical Data: Optical Data:

Biaxial (-), a=1.731, b=1.755, g=1.755, bire=0.0240, 2V(Calc)=0, 2V(Meas)=small.

Calculated Properties of Ericaite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.23 gm/cc
note: Specific Gravity of Ericaite =3.35 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Help on Photoelectric: Photoelectric:

PEEricaite = 8.32 barns/electron
U=PEEricaite x rElectron Density= 26.90 barns/cc.

Help on Radioactivity: Radioactivity:

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

Ericaite Classification

Help on Dana Class: Dana Class:

25.06.01.02 (25)Anhydrous Borates Containing Hydroxyl or Halogen

(25.06)Dana Type

(25.06.01)Boracite Group (Orthorhombic: Rca21)

25.06.01.01 Boracite Mg3B7O13Cl P ca21 mm2

25.06.01.02 Ericaite (Fe,Mg,Mn)3B7O13Cl P ca21 mm2

25.06.01.03 Chambersite Mn3B7O13Cl P ca21 mm2

Help on Strunz Class: Strunz Class:

06.GA.05 06 - BORATES

06.G - Heptaborates and other Megaborates

06.GA -Tekto-heptaborates

06.GA.05 Boracite Mg3B7O13Cl P ca21 mm2

06.GA.05 Chambersite Mn3B7O13Cl P ca21 mm2

06.GA.05 Ericaite (Fe,Mg,Mn)3B7O13Cl P ca21 mm2

Other Ericaite Information

Help on References: References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

Help on See Also: See Also:

Links to other databases for Ericaite :
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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Ask about Ericaite here :
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Print or Cut-and-Paste your Ericaite Specimen Label here :

Ericaite

(Fe++,Mg,Mn)3B7O13Cl
Dana No: 25.06.01.02 Strunz No: 06.GA.05
Locality:

Notes: