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Ferribushmakinite

Collectors Summary

Color gelb
Streak color blass gelb
Lustre Diamantglanz
Hardness (Mohs) 2
Cleavages ausgeprägt [010]
Fracture unregelmäßig, splittrig
Crystal System monoklin, P21/m

Chemism

Chemical formula

Pb2Fe3+(PO4)(VO4)(OH)

Empirical formula (analysis)

(Pb1.99Ca0.01)Σ2.00(Fe0.66Al0.22Cu0.10)Σ0.98(V0.97P0.85As0.19)Σ2.01O7.84(OH)1.16

Chemical composition

Blei, Eisen, Phosphor, Sauerstoff, Vanadium, Wasserstoff

Unit weight: 697.037239024 u; Number of atoms in the formula: 15.15

Info

Empirical formula:

(Pb1.99Ca0.01)(Fe0.66Al0.22Cu0.10)(V0.97P0.85As0.19)O7.84(OH)1.16

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.17

1.16

7.66

1.0079470

1.1692185

Oxygen

O

20.66

9

59.41

15.9994300

143.9948700

Aluminium

Al

0.85

0.22

1.45

26.9815382

5.9359384

Phosphorus

P

3.78

0.85

5.61

30.9737612

26.3276970

Calcium

Ca

0.06

0.01

0.07

40.0784000

0.4007840

Vanadium

V

7.09

0.97

6.40

50.9415100

49.4132647

Iron

Fe

5.29

0.66

4.36

55.8452000

36.8578320

Copper

Cu

0.91

0.1

0.66

63.5463000

6.3546300

Arsenic

As

2.04

0.19

1.25

74.9216020

14.2351044

Lead

Pb

59.16

1.99

13.14

207.2100000

412.3479000

Analysis wt%

PbO : 63.69, CaO : 0.07, CuO : 1.11, Fe2O3 : 7.63, Al2O3 : 1.63, V2O5 : 12.65, As2O5 : 3.09, P2O5 : 8.63, H2O : 1.50 (structure), Total : 100.00 wt.%

Strunz 9th edition incl. updates

8.BG.05

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
G: Mit mittelgroßen und großen [Kationen] (OH, etc.):RO4 = 0.5:1
05:Brackebuschit-Gruppe

Lapis Classification

VII/B.24-026

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
B: Wasserfreie Phosphate, mit fremden Anionen F,Cl,O,OH
24: Mittelgroße und große Kationen: Mg-Cu-Zn und Ca-Na-K-Ba-Pb; Brackebuschit- Gruppe

IMA status

anerkannt - (CNMNC) Newsletter 22 - Mineralogical Magazine, 2014, Vol. 78(5), pp. 1241-1248

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Brackebuschite supergroup  ⇒ Brackebuschite group

Optical Properties

Color

gelb

Streak color

blass gelb

Diaphaneity (Transparency)

durchscheinend

Lustre

Diamantglanz

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

11

Space Group

P21/m

Cell parameters a (Å)

7.7719(10)

Cell parameters b (Å)

5.9060(7)

Cell parameters c (Å)

8.7929(12)

Cell parameters a/b or c/a

1.316

Cell parameters c/b

1.489

Cell parameters α

90°

Cell parameters β

111.604(8)º

Cell parameters γ

90°

Z

2

Volumne (ų)

375.249

Kristall structure

Brackebuschit-Gruppe; Struktur bestimmt

X-Ray Powder Diffraction

4.794(46), 3.245(84), 2.947(100), 2.743(49), 2.288(37), 1.853(27), 1.808(27), 1.720(28)

XRD chart Ferribushmakinite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Physical Properties

Hardness (Mohs)

2

Density (g/cm³)

6.154 (berechnet)

6.169 ( ρ calc. Mineralienatlas )

Cleavages

ausgeprägt [010]

Fracture

unregelmäßig, splittrig

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

USA/Nevada/Humboldt Co./Iron Point District/Valmy/Silver Coin Mine

Type material

Mineral Sciences Department, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, California 90007, USA

Collection number of type material

64512

Paragenesis of type material

Plumbogummit, Mottramit, Br-rich Chlorargyrit und Baryt auf massivem Quarz

Preface

Author (Name, Year)

Kampf, A. R., Adams, P., Nash, B. P., and Marty, J. (2014)

References

Kampf, A.R., Adams, P.M., Nash, B.P. and Marty, J. (2014) Ferribushmakinite, IMA 2014-055. CNMNC Newsletter No. 22, October 2014, page 1246; Mineralogical Magazine, 78, 1241-1248.

Kampf, A. R.; Adams, P. M.; Nash, B. P.; Marty, J. - Ferribushmakinite, Pb2Fe3+(PO4)(VO4)(OH), the Fe3+ analogue of bushmakinite from the Silver Coin mine, Valmy, Nevada - Mineralogical Magazine, 79 (2015) 661 - 669

IMA group assignments

Other languages

German

Ferribushmakinit

English

Ferribushmakinite

Russian

Феррибушмакинит

CNMNC (IMA)-Number

IMA 2014-055

CNMNC symbol

Symbol

Fbmk

Locations with GPS information