Gladite Mineral Data

Gladite Mineral Data +

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General Gladite Information

Chemical Formula:

PbCuBi5S9

Composition:

Molecular Weight = 1,604.24 gm

Copper 3.96 % Cu

Bismuth 65.13 % Bi

Lead 12.92 % Pb

Sulfur 17.99 % S

______

100.00 %

Empirical Formula:

PbCuBi₅S₉

Environment:

Of hydrothermal origin.

IMA Status:

Valid Species (Pre-IMA) 1924

Locality:

Gladhammer, Province of Kalmar, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named after its locality

Synonym:

ICSD 167

PDF 29-562

Gladite Image

Images:

Gladite

Comments: Bluish-gray prismatic crystal of gladite on calcite.
Location: Holzm?hlental quarry, Flechtingen, Saxony-Anhalt, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Gladite Crystallography

Axial Ratios:

a:b:c =2.8693:1:8.3764

Cell Dimensions:

a = 11.486, b = 4.003, c = 33.531, Z = 4; V = 1,541.70 Den(Calc)= 6.91

Crystal System:

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

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

By Intensity(I/I_o): 3.56(1), 1.082(0.9), 1.101(0.9),1.308(0.9), 1.916(0.7), 1.948(0.7), 2.81(0.7),

Crystal Structure:

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Topa D , Makovicky E , Balic-Zunic T , The Canadian Mineralogist , 40 (2002) p.1147-1159, The structural role of excess Cu and Pb in gladite and krupkaite, based on new refinements of their structure, Sample: bd33

View Additional jPOWD Structure files for Gladite
[1] [2] [3] [4]

Physical Properties of Gladite

Cleavage:

[010] Good, [100] Imperfect

Color:

Lead gray, Gray, Tin white.

Density:

6.96

Diaphaniety:

Opaque

Habit:

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

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Metallic

Streak:

black

Calculated Properties of Gladite

Electron Density:

r_electron=5.77 gm/cc
note: r_Gladite=6.91 gm/cc.

Fermion Index

Fermion Index = 0.02989
Boson Index = 0.97011

Photoelectric:

PE_Gladite=1,495.37 barns/electron
U=PE_Gladite x r_electron=8,631.01 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Gladite is Not Radioactive

Gladite Classification

Dana Class:

3.4.5.3 (3)Sulfides - Sulfosalts

(3.4)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(3.4.5)Aikinite Group (Orthorhombic containing Pb, Cu, Bi, & S)

3.4.5.1 Aikinite PbCuBiS3 Pbnm 2/m 2/m 2/m

3.4.5.2 Krupkaite PbCuBi3S6 P mc2₁ mm2

3.4.5.3 Gladite PbCuBi5S9 P nma 2/m 2/m 2/m

3.4.5.4 Hammarite Pb2Cu2Bi4S9(?) Pbnm 2/m 2/m 2/m

3.4.5.5 Friedrichite Pb5Cu5Bi7S18 Pb21m mm2

3.4.5.6 Pekoite PbCuBi11(S,Se)18 P 2₁am mm2

3.4.5.7 Lindstromite Pb3Cu3Bi7S15 Pbnm 2/m 2/m 2/m

3.4.5.8 IMA2000-044! Pb1.6Cu1.6Bi6.4S12 P mc2₁ mm2

Strunz Class:

II/E.30-60 II - Sulfides and sulphosalts

II/E - Sulfosalts (S : As,Sb,Bi = x) Lead-Sulfosalts (Pb-Cu/Ag) with predominant Vismut x = 6.0 - 1.6

II/E.30 - Aikinite - Pekoite series

II/E.30-10 Aikinite PbCuBiS3 Pbnm 2/m 2/m 2/m

II/E.30-15 Soucekite PbCuBi(S,Se)3 Pn21m mm2

II/E.30-20 Friedrichite Pb5Cu5Bi7S18 Pb21m mm2

II/E.30-25 Emilite! Cu10.7Pb10.7Bi21.3S48 P mc2₁ mm2

II/E.30-30 Hammarite Pb2Cu2Bi4S9(?) Pbnm 2/m 2/m 2/m

II/E.30-40 Lindstromite Pb3Cu3Bi7S15 Pbnm 2/m 2/m 2/m

II/E.30-50 Krupkaite PbCuBi3S6 P mc2₁ mm2

II/E.30-54 Paarite! Cu1.7Pb1.7Bi6.3S12 Pmcn 2/m 2/m 2/m

II/E.30-60 Gladite PbCuBi5S9 P nma 2/m 2/m 2/m

II/E.30-70 Pekoite PbCuBi11(S,Se)18 P 2₁am mm2

Other Gladite Information

References:

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

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

Gladite

PbCuBi5S9
Dana No: 3.4.5.3 Strunz No: II/E.30-60
Locality:

Notes: