Antlerite Mineral Data

Antlerite Mineral Data +

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General Antlerite Information

Chemical Formula:

Cu3(SO4)(OH)4

Composition:

Molecular Weight = 354.73 gm

Copper 53.74 % Cu 67.27 % CuO

Hydrogen 1.14 % H 10.16 % H₂O

Sulfur 9.04 % S 22.57 % SO₃

Oxygen 36.08 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cu₃(SO₄)(OH)₄

Environment:

Secondary, weathered zone of carbonate-poor copper deposits.

IMA Status:

Valid Species (Pre-IMA) 1889

Locality:

Antler mine, Mojave Co., Arizona. Link to MinDat.org Location Data.

Name Origin:

Named after its locality.

Synonym:

ICSD 203067

PDF 7-407

Antlerite Image

Images:

Antlerite

Comments: Dark green crystals of antlerite on sandstone.
Location: Ray mine, Ray, Pinal County, Arizona, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Images:

Antlerite Metaschoepite

Comments: Yellow crystals of metaschoepite with green antlerite.
Location: P?hla-Tellerh?user Gallery, P?hla, Schwarzenberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Antlerite Crystallography

Axial Ratios:

a:b:c =0.6872:1:0.5029

Cell Dimensions:

a = 8.24, b = 11.99, c = 6.03, Z = 4; V = 595.75 Den(Calc)= 3.95

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnam

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

By Intensity(I/I_o): 4.86(1), 2.566(0.85), 3.6(0.75),

Forms:

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Crystal Structure:

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Hawthorne F C , Groat L A , Eby R K , The Canadian Mineralogist , 27 (1989) p.205-209, Antlerite, Cu3SO4(OH)4, a heteropolyhedral wallpaper structure

Physical Properties of Antlerite

Cleavage:

[010] Perfect

Color:

Green, Light green, Emerald green, Black, Black green.

Density:

3.9

Diaphaniety:

Translucent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Concretionary - Rounded massive fine-grained materials.

Habit:

Reniform - "Kidney like" in shape (e.g.. hematite).

Hardness:

3 - Calcite

Luminescence:

None.

Luster:

Vitreous (Glassy)

Magnetism:

Nonmagnetic

Streak:

pale green

Optical Properties of Antlerite

Gladstone-Dale:

CI meas= -0.02 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1901,KPDmeas= 0.1926,KC= 0.1888

Optical Data:

Biaxial (+), a=1.726, b=1.738, g=1.789, bire=0.0630, 2V(Calc)=54, 2V(Meas)=53. Dispersion relatively strong.

Pleochroism (x):

yellowish green.

Pleochroism (y):

bluish green.

Pleochroism (z):

bluish green.

Calculated Properties of Antlerite

Electron Density:

r_electron=3.81 gm/cc
note: r_Antlerite=3.95 gm/cc.

Fermion Index

Fermion Index = 0.00085
Boson Index = 0.99915

Photoelectric:

PE_Antlerite= 24.07 barns/electron
U=PE_Antlerite x r_electron= 91.65 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Antlerite is Not Radioactive

Antlerite Classification

Dana Class:

30.1.12.1 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.1)where (A B)m (XO4)p Zq where m:p>2:1

(30.1.12)Dana Group

30.1.12.1 Antlerite Cu3(SO4)(OH)4 Pnam 2/m 2/m 2/m

Strunz Class:

VI/B.01-20 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/B - Waterfree sulfates [SO4]2- with unfamiliar anions. cations of medium size

VI/B.01 - Brochantite series, Dolerophanite - Brochantite

VI/B.01-10 Dolerophanite Cu2(SO4)O C 2/m 2/m

VI/B.01-20 Antlerite Cu3(SO4)(OH)4 Pnam 2/m 2/m 2/m

VI/B.01-30 Brochantite Cu4(SO4)(OH)6 P 2₁/a 2/m

Other Antlerite Information

References:

NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

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

Antlerite

Cu3(SO4)(OH)4
Dana No: 30.1.12.1 Strunz No: VI/B.01-20
Locality:

Notes: