Embolite Mineral Data

Embolite Mineral Data

General Embolite Information

Chemical Formula:

Ag(Br,Cl)

Composition:

Molecular Weight = 165.55 gm

Silver 65.16 % Ag 69.99 % Ag₂O

Bromine 24.13 % Br 24.13 % Br

- % Br -2.42 % -O=Br₂

Chlorine 10.71 % Cl 10.71 % Cl

- % Cl -2.42 % -O=Cl₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

AgCl_0.5Br_0.5

Environment:

Oxidized portions of silver deposits.

IMA Status:

Not Approved IMA

Locality:

Chanarcillo, Chile Link to MinDat.org Location Data.

Name Origin:

From the Greek for "intermediate" alluding to the 50:50 mixture of chloride and bromide in the formula.

Embolite Image

Images:

Embolite

Comments: An exposed 3 x 2 cm vug in barite completely filled with a mass of embolite comprised of myriad crystals to 2 mm.
Location: Broken Hill Mine, New South Wales, Australia. Scale: Picture size 4 cm.
© John Veevaert

Images:

Embolite Iodargyrite

Comments: Cubo-octahedral crystals of iodaryrite (I) with smaller and darker octahedral crystals of embolite (E).
Location: Broken Hill, New South Wales, Australia. Scale: Specimen size 2x1 cm.
© Dave Barthelmy

Embolite Crystallography

Cell Dimensions:

a = 5.66, Z = 4; V = 181.32 Den(Calc)= 6.06

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m

Physical Properties of Embolite

Cleavage:

None

Color:

Yellowish green, Grayish yellow.

Density:

5.6 - 5.8, Average = 5.69

Diaphaniety:

Transparent to translucent

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Hardness:

1.5-2 - Talc-Gypsum

Luminescence:

Non-fluorescent.

Luster:

Adamantine - Greasy

Magnetism:

Nonmagnetic

Streak:

white

Optical Properties of Embolite

Gladstone-Dale:

CI meas= 0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.069 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1898,KPDmeas= 0.2018,KC= 0.2038

Optical Data:

Isotropic, n=2.15.

Calculated Properties of Embolite

Electron Density:

r_electron=5.03 gm/cc
note: r_Embolite=5.70 gm/cc.

Fermion Index

Fermion Index = 0
Boson Index = 1

Photoelectric:

PE_Embolite= 190.85 barns/electron
U=PE_Embolite x r_electron= 959.38 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Embolite is Not Radioactive

Embolite Classification

Dana Class:

9.1.4.0 (9)Anhydrous and Hydrated Halides

(9.1)where A X

(9.1.4)Dana Group

9.1.4.0 Embolite * Ag(Br,Cl) F m3m 4/m 3 2/m

9.1.4.1 Chlorargyrite AgCl F m3m 4/m 3 2/m

9.1.4.2 Bromargyrite AgBr F m3m 4/m 3 2/m

Strunz Class:

III/X.00-00 III - Halogenides

III/X - Unclassified Strunz Halogenides

III/X.00 - Bromide

Other Embolite Information

References:

NAME( Dana7) PHYS. PROP.(Dana) OPTIC PROP.(Dana)

See Also:

Links to other databases for Embolite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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

Embolite

Ag(Br,Cl)
Dana No: 9.1.4.0 Strunz No: III/X.00-00
Locality:

Notes: