Spangolite Mineral Data

Spangolite Mineral Data +

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General Spangolite Information

Chemical Formula:

Cu6Al(SO4)(OH)12Cl·3(H2O)

Composition:

Molecular Weight = 797.91 gm

Aluminum 3.38 % Al 6.39 % Al₂O₃

Copper 47.78 % Cu 59.82 % CuO

Hydrogen 2.27 % H 20.32 % H₂O

Sulfur 4.02 % S 10.03 % SO₃

Chlorine 4.44 % Cl 4.44 % Cl

- % Cl -1.00 % -O=Cl₂

Oxygen 38.10 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cu₆Al(SO₄)(OH)₁₂Cl·3(H₂O)

Environment:

Secondary mineral in copper deposits.

IMA Status:

Valid Species (Pre-IMA) 1890

Locality:

Globe, Globe Hills District, Tombstone, Gila County, Arizona, USA Link to MinDat.org Location Data.

Name Origin:

Named after Norman Spang (1889-1954), American mineral collector, USA.

Synonym:

ICSD 72806

PDF 5-142

Spangolite Image

Images:

Spangolite

Comments: Blue, hexagonal (trigonal) crystals of spangolite on matrix.
Location: Blanchard mine, Bingham, Socorro County, New Mexico, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Spangolite Crystallography

Axial Ratios:

a:c = 1:1.73903

Cell Dimensions:

a = 8.254, c = 14.354, Z = 2; V = 846.90 Den(Calc)= 3.13

Crystal System:

Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: P 3₁c

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

By Intensity(I/I_o): 7.1(1), 3.59(0.8), 2.54(0.7),

Forms:

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Crystal Structure:

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Hawthorne F C , Kimata M , Eby R K , American Mineralogist , 78 (1993) p.649-652, The crystal structure of spangolite, a complex copper sulfate sheet mineral

Physical Properties of Spangolite

Cleavage:

[0001] Perfect, [1011] Distinct

Color:

Blue green, Green, Dark green, Emerald green.

Density:

3.1

Diaphaniety:

Transparent to Translucent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Platy - Sheet forms (e.g. micas).

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

2.5-3 - Finger Nail-Calcite

Luminescence:

None.

Luster:

Vitreous (Glassy)

Magnetism:

Nonmagnetic

Streak:

light green

Optical Properties of Spangolite

Dichroism (e):

bluish green.

Dichroism (w):

weak green.

Gladstone-Dale:

CI meas= 0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.012 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2133,KPDmeas= 0.2153,KC= 0.2158

Optical Data:

Uniaxial (-), e=1.641, w=1.694, bire=0.0530.

Calculated Properties of Spangolite

Electron Density:

r_electron=3.03 gm/cc
note: r_Spangolite=3.10 gm/cc.

Fermion Index

Fermion Index = 0.00048
Boson Index = 0.99952

Photoelectric:

PE_Spangolite= 21.29 barns/electron
U=PE_Spangolite x r_electron= 64.51 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Spangolite is Not Radioactive

Spangolite Classification

Dana Class:

31.1.5.1 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.1)where (A+ B++)m (XO4)p Zq·x(H2O), where m:p>6:1

(31.1.5)Dana Group

31.1.5.1 Spangolite Cu6Al(SO4)(OH)12Cl·3(H2O) P 3₁c 3m

Strunz Class:

VI/D.08-10 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size

VI/D.08 - Spangolite - Glaucocerinite series

VI/D.08-05 Bechererite! (Zn,Cu)6Zn2(OH)13[(S,Si)(O,OH)4]2 P 3 3

VI/D.08-10 Spangolite Cu6Al(SO4)(OH)12Cl·3(H2O) P 3₁c 3m

VI/D.08-20 Cyanotrichite Cu4Al2(SO4)(OH)12·2(H2O) Unk Ortho

VI/D.08-30 Carbonate-cyanotrichite Cu4Al2(CO3,SO4)(OH)12·2(H2O) Unk Ortho

VI/D.08-35 Camerolaite Cu4Al2[HSbO4,SO4](OH)10(CO3)·2(H2O) P 2₁ ? 2

VI/D.08-40 Woodwardite Cu4Al2(SO4)(OH)12·2-4(H2O) Unk Hex

VI/D.08-42 Hydrowoodwardite! Cu1-xAlx(OH)2(SO4)x/2·n(H2O)with0<x<0.67andn>3x/2 R 3m 3 2/m

VI/D.08-45 Zincowoodwardite! [Zn1-xAlx(OH)2][(SO4)x/2(H2O)n] P 3- or R 3m 3

VI/D.08-45* Zincowoodwardite-1T! [Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)],x=0.33,n.0.96 P 3 3

VI/D.08-45** Zincowoodwardite-3R! [Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)],0.32<x<0.50,n=0.59 R 3m 3 2/m

VI/D.08-50 Chalcoalumite CuAl4(SO4)(OH)12·3(H2O) P 2₁ 2

VI/D.08-60 Nickelalumite (Ni,Cu)Al4[(SO4),(NO3)2](OH)12·3(H2O) P 2₁ 2

VI/D.08-70 Mbobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12·3(H2O) P 2₁ 2

VI/D.08-80 Hydrombobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12·14(H2O) Unk Mono

VI/D.08-90 Carrboydite (Ni,Cu)14Al9(SO4,CO3)6(OH)43·7(H2O) Unk Hex

VI/D.08-100 Zincaluminite Zn6Al6(SO4)2(OH)26·5(H2O) Unk Hex

VI/D.08-110 Glaucocerinite (Zn,Cu)5Al3(SO4)1.5(OH)16·9(H2O) Unk (HEX-R) Trig

Other Spangolite Information

References:

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

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Spangolite

Cu6Al(SO4)(OH)12Cl·3(H2O)
Dana No: 31.1.5.1 Strunz No: VI/D.08-10
Locality:

Notes: