Elyite Mineral Data

Elyite Mineral Data +

General Elyite Information

Chemical Formula:

Pb4Cu(SO4)O2(OH)4·(H2O)

Composition:

Molecular Weight = 1,106.45 gm

Copper 5.74 % Cu 7.19 % CuO

Hydrogen 0.55 % H 4.88 % H₂O

Lead 74.91 % Pb 80.69 % PbO

Sulfur 2.90 % S 7.24 % SO₃

Oxygen 15.91 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Pb₄Cu(SO₄)O₂(OH)₄·(H₂O)

Environment:

In vugs in oxidizing Pb-Cu-Zn sulfide ores. Common as a smelter product in slags.

IMA Status:

Approved IMA 1972

Locality:

Silver King mine, Ward, Nevada, USA. Link to MinDat.org Location Data.

Name Origin:

Named for John Ely, an important figure in the early mining history of eastern Nevada.

Synonym:

ICSD 89798

PDF 50-1613

Elyite Image

Images:

Elyite

Comments: Purple acicular crystals of elyite.
Location: Kurfurst-Ernst, Bonkhausen, Sauerland, Nordrhein-Westfalen, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Elyite Crystallography

Axial Ratios:

a:b:c =1.2342:1:1.2669

Cell Dimensions:

a = 14.233, b = 11.532, c = 14.611, Z = 8; beta = 100.45° V = 2,358.40 Den(Calc)= 6.23

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 6.999(1), 7.189(0.99), 2.995(0.73),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Kolitsch U , Giester G , American Mineralogist , 85 (2000) p.1816-1821, Elyite, Pb4Cu(SO4)O2(OH)4.H2O: Crystal structure and new data

Physical Properties of Elyite

Cleavage:

[100] Good

Color:

Violet, Lavender.

Density:

Diaphaniety:

Transparent

Fracture:

Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

2 - Gypsum

Luster:

Silky

Streak:

white

Optical Properties of Elyite

Gladstone-Dale:

CI meas= -0.11 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.069 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1593,KPDmeas= 0.1654,KC= 0.149

Optical Data:

Biaxial (-), a=1.99, b=1.993, g=1.994, bire=0.0040, 2V(Calc)=58, 2V(Meas)=66.

Calculated Properties of Elyite

Electron Density:

r_electron=5.26 gm/cc
note: r_Elyite=6.23 gm/cc.

Fermion Index

Fermion Index = 0.16583
Boson Index = 0.83417

Photoelectric:

PE_Elyite=1,365.28 barns/electron
U=PE_Elyite x r_electron=7,179.99 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Elyite is Not Radioactive

Elyite Classification

Dana Class:

30.1.2.1 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

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

(30.1.2)Dana Group

30.1.2.1 Elyite Pb4Cu(SO4)O2(OH)4·(H2O) P 2₁/c 2/m

Strunz Class:

VI/B.10-40 VI - Sulfates,Chromates,Molybdates and Tungstates

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

VI/B.10 - Linarite - Mammothite series

VI/B.10-10 Linarite PbCu(SO4)(OH)2 P 2₁/m 2/m

VI/B.10-20 Schmiederite Pb2Cu2(SeO3)(SeO4)(OH)4 P 2₁/m 2/m

VI/B.10-30 Chenite Pb4Cu(SO4)2(OH)6 P1 1

VI/B.10-40 Elyite Pb4Cu(SO4)O2(OH)4·(H2O) P 2₁/c 2/m

VI/B.10-50 Mammothite Pb6Cu4AlSbO2(SO4)2Cl4(OH)16 C 2/m 2/m

Other Elyite Information

References:

NAME( Dana8) PHYS. PROP.(AmMin, Vol 85, p 1816) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Elyite :
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 - WWW-MINCRYST 13 -École des Mines de Paris

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Elyite

Pb4Cu(SO4)O2(OH)4·(H2O)
Dana No: 30.1.2.1 Strunz No: VI/B.10-40
Locality:

Notes: