Henryite Mineral Data

Henryite Mineral Data +

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General Henryite Information

Chemical Formula:

Cu4Ag3Te4

Composition:

Molecular Weight = 1,088.19 gm

Copper 23.36 % Cu

Silver 29.74 % Ag

Tellurium 46.90 % Te

______

100.00 %

Empirical Formula:

Cu₄Ag₃Te₄

Environment:

Hydrothermal origin with other Cu-Ag tellurides.

IMA Status:

Approved IMA 1983

Locality:

Campbell mine, Bisbee, Arizona, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Norman F. M. Henry, (1909-1983), English mineralogist.

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Henryite Crystallography

Cell Dimensions:

a = 12.2, Z = 8; V = 1,815.85 Den(Calc)= 7.96

Crystal System:

IsometricSpace Group: Unk

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

By Intensity(I/I_o): 2.156(1), 3.043(0.8), 7.03(0.6),

Physical Properties of Henryite

Color:

Gray.

Density:

7.86

Diaphaniety:

Opaque

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

3.5 - Copper Penny

Luster:

Metallic

Optical Properties of Henryite

RL Color:

Pale blue.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Henryite in Air**
λ	R	∑ R(λ)
400 nm	41.80
420 nm	40.20
440 nm	38.70
460 nm	37.40
480 nm	36.20
500 nm	35.10
520 nm	34.00
540 nm	33.10
560 nm	32.30
580 nm	31.40
600 nm	30.40
620 nm	29.40
640 nm	28.40
660 nm	27.40
680 nm	26.50
700 nm	25.70

**Calculated Relative Intensity Colors of Henryite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%	270%	290%
R

Calculated Properties of Henryite

Electron Density:

r_electron=6.80 gm/cc
note: r_Henryite=7.96 gm/cc.

Fermion Index

Fermion Index = 0.03747
Boson Index = 0.96253

Photoelectric:

PE_Henryite= 259.10 barns/electron
U=PE_Henryite x r_electron=1,762.61 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Henryite is Not Radioactive

Henryite Classification

Dana Class:

2.16.11.1 (2)Sulfides - Including Selenides and Tellurides

(2.16)with miscellaneous formulae

(2.16.11)Dana Group

2.16.11.1 Henryite Cu4Ag3Te4 Unk Cubic

Strunz Class:

II/B.06-50 II - Sulfides and sulphosalts

II/B - Sulfides with metal: sulfur, selenium and tellurium > 1:1, Sulfides, Selenides and Tellurides with predominant Copper and Silver/Gold

II/B.06 - Jalpaite - Imiterite series

II/B.06-10 Jalpaite Ag3CuS2 I 4₁/amd 4/m 2/m 2/m

II/B.06-20 Mckinstryite (Ag,Cu)2S Pnam 2/m 2/m 2/m

II/B.06-30 Stromeyerite AgCuS C mcm 2/m 2/m 2/m

II/B.06-40 Eucairite CuAgSe Pmmn 2/m 2/m 2/m

II/B.06-50 Henryite Cu4Ag3Te4 Unk Cubic

II/B.06-55 Brodtkorbite! Cu2HgSe2 P 2₁/n 2/m

II/B.06-60 Imiterite Ag2HgS2 P 2₁/c 2/m

Other Henryite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Henryite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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

Henryite

Cu4Ag3Te4
Dana No: 2.16.11.1 Strunz No: II/B.06-50
Locality:

Notes: