Spangolite Mineral Data

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.

Name Pronunciation:

Spangolite + Pronunciation

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),

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Forms: ( 1 0 2) ( 1 0 3) ( 1 0 1) ( 0 0 1)

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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

Diaphaneity:

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:

Non-fluorescent.

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
Ncalc = 1.67 - 1.68

Optical Data:

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

Calculated Properties of Spangolite

Electron Density:

Bulk Density (Electron Density)=3.03 gm/cc
note: Specific Gravity of Spangolite =3.10 gm/cc.

Fermion Index:

Fermion Index = 0.0004876892
Boson Index = 0.9995123108

Photoelectric:

PE_Spangolite= 21.29 barns/electron
U=PE_Spangolite x rElectron Density= 64.51 barns/cc.

Radioactivity:

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

Spangolite Classification

Dana Class:

31.01.05.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

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

(31.01.05)Dana Group

31.01.05.01 Spangolite Cu6Al(SO4)(OH)12Cl•3(H2O) P 3₁c 3m

Strunz Class:

07.DD.15 07 - SULFATES (SELENATES, TELLURATES)

07.D - Sulfates (selenates, etc.) with additional anions, with H2O

07.DD -With only medium-sized cations; sheets of edge-sharing octahedra

07.DD.15 Spangolite Cu6Al(SO4)(OH)12Cl•3(H2O) P 3₁c 3m

Other Spangolite Information

References:

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

See Also:

Links to other databases for Spangolite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Franklin Minerals(Dunn)
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST

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Ask about Spangolite here :
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Print or Cut-and-Paste your Spangolite Specimen Label here :

Spangolite

Cu6Al(SO4)(OH)12Cl•3(H2O)
Dana No: 31.01.05.01 Strunz No: 07.DD.15
Locality:

Notes: