Haydeeite Mineral Data

General Haydeeite Information

Chemical Formula:

Cu3Mg(OH)6Cl2

Composition:

Molecular Weight = 382.25 gm

Magnesium 6.04 % Mg 10.02 % MgO

Copper 49.04 % Cu 61.39 % CuO

Hydrogen 1.66 % H 14.85 % H₂O

Chlorine 17.81 % Cl 17.81 % Cl

- % Cl -4.02 % -O=Cl₂

Oxygen 25.45 % O

______ ______

100.00 % 100.04 % = TOTAL OXIDE

Empirical Formula:

Cu_2.95Mg_0.95H_6.3Cl_1.92O_6.08

Environment:

Atacamite group

IMA Status:

Approved IMA 2006 (Dana # Added)

Locality:

Haydee mine, 144 km South of Iquique, Tarapacï¿½ Province, Northern Chile Link to MinDat.org Location Data.

Name Origin:

Named for the locality

Synonym:

IMA2006-046

Haydeeite Image

Images:

Haydeeite

Comments: Blue crystalline druze of haydeeite on matrix.
Location: Haydee Mine, Iquiqua, Paparaca, Chile. Scale: Specimen Size 2 1/2 in x 2 in.
© Chris Wright / Wrights Rock Shop

Haydeeite Crystallography

Axial Ratios:

a:c = 1:0.91613

Cell Dimensions:

a = 6.2733, c = 5.7472, Z = 1; V = 195.88 Den(Calc)= 3.24

Crystal System:

Trigonal - Rhombohedral H-M Symbol ( 3) Space Group: R 3m

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

By Intensity(I/I_o): 5.745(1), 2.872(0.17), 1.915(0.09),2.455(0.06),

Physical Properties of Haydeeite

Cleavage:

{0001} Perfect

Color:

Bluish green.

Density:

3.27

Diaphaneity:

Transparent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Acicular - Occurs as needle-like crystals.

Hardness:

2 - Gypsum

Luster:

Vitreous (Glassy)

Streak:

bright greenish blue

Optical Properties of Haydeeite

Gladstone-Dale:

CI meas= 0.032 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.023 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2258,KPDmeas= 0.2237,KC= 0.2311
Ncalc = 1.75 - 1.76

Optical Data:

Uniaxial (-), e=1.71, w=1.753, bire=0.0430.

Calculated Properties of Haydeeite

Electron Density:

Bulk Density (Electron Density)=3.13 gm/cc
note: Specific Gravity of Haydeeite =3.24 gm/cc.

Fermion Index:

Fermion Index = 0.0061651923
Boson Index = 0.9938348077

Photoelectric:

PE_Haydeeite= 22.74 barns/electron
U=PE_Haydeeite x rElectron Density= 71.14 barns/cc.

Radioactivity:

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

Haydeeite Classification

Dana Class:

10.01.01.04 (10)Oxyhalides and Hydroxyhalides

(10.01)where (A)2 (O,OH)3 Xq

(10.01.01)Atacamite group

10.01.01.01 Atacamite Cu2Cl(OH)3 Pmcn 2/m 2/m 2/m

10.01.01.02 Hibbingite (Fe,Mg)2(OH)3Cl Pnam 2/m 2/m 2/m

10.01.01.03 Gillardite! Cu3NiCl2(OH)6 R 3m 3

10.01.01.04 Haydeeite! Cu3Mg(OH)6Cl2 R 3m 3

Strunz Class:

03.DA.10c 03 - HALIDES

03.D - Oxyhalides, Hydroxyhalides and Related Double Halides

03.DA -With Cu, etc., without Pb

03.DA.10c Paratacamite (Cu,Zn)2(OH)3Cl R 3 3

03.DA.10c Gillardite! Cu3NiCl2(OH)6 R 3m 3

03.DA.10c Herbertsmithite! Cu3Zn(OH)6Cl2 R 3m 3 2/m

03.DA.10c Kapellasite! Cu3Zn(OH)6Cl2 P 3m1 3 2/m

03.DA.10c Haydeeite! Cu3Mg(OH)6Cl2 R 3m 3

Other Haydeeite Information

References:

NAME( AmMin, v93:1943) PHYS. PROP.(AmMin, v93:1943) OPTIC PROP.(AmMin, v93:1943)

See Also:

Links to other databases for Haydeeite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Haydeeite using:

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

Haydeeite

Cu3Mg(OH)6Cl2
Dana No: 10.01.01.04 Strunz No: 03.DA.10c
Locality:

Notes:

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