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Rongibbsite

Pictures (2 Images total)

Ronggibbsit
Views (File:
1542556015
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Ronggibbsit
Near Evening Star Mine Osborn District Maricopa Arizona; Bilbreite 1,2 mm
Copyright: Ulrich Hansper; Contribution: Ulrich Hansper
Collection: Ulrich Hansper
Location: USA/Arizona/Maricopa Co./Belmont Mountain/Osborn District/Big Horn Mts/Unnamed prospect near Evening Star mine
Mineral: Rongibbsite
Image: 1542556015
Rating: 5 (votes: 1)
License: Usage for Mineralienatlas project only
Ronggibbsit

Near Evening Star Mine Osborn District Maricopa Arizona; Bilbreite 1,2 mm

Collection: Ulrich Hansper
Copyright: Ulrich Hansper
Contribution: Ulrich Hansper 2018-11-18
Locality: Unnamed prospect near Evening Star mine / Big Horn Mts / Osborn District / Belmont Mountain / Maricopa Co. / Arizona / USA
Rongibbsit
Views (File:
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Rongibbsit
Bildbreite: 4 mm, Fundort: Unnamed prospect near Evening Star mine, Big Horn Mts, Osborn District, Belmont Mountain, Maricopa Co., Arizona, USA
Copyright: Leonardus; Contribution: thdun5
Location: USA/Arizona/Maricopa Co./Belmont Mountain/Osborn District/Big Horn Mts/Unnamed prospect near Evening Star mine
Mineral: Rongibbsite
Image: 1378304072
License: Usage for Mineralienatlas project only
Rongibbsit

Bildbreite: 4 mm, Fundort: Unnamed prospect near Evening Star mine, Big Horn Mts, Osborn District, Belmont Mountain, Maricopa Co., Arizona, USA

Copyright: Leonardus
Contribution: thdun5 2013-09-04
Locality: Unnamed prospect near Evening Star mine / Big Horn Mts / Osborn District / Belmont Mountain / Maricopa Co. / Arizona / USA

Collectors Summary

Color farblos
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 5
Cleavages vollkommen nach {100}
Crystal System monoklin, I2/m
Morphology abgeflachte prismatische, farblose Kristalle, Größe bis 0.70 × 0.20 × 0.05 mm, oft in Büscheln

Chemism

Chemical formula

Pb2(AlSi4)O11(OH)

Empirical formula (analysis)

Pb2.05(Si3.89Al1.11)O11(OH)

Chemical composition

Aluminium, Blei, Silicium, Sauerstoff, Wasserstoff

Unit weight: 756.983826102 u; Number of atoms in the formula: 20.05

Info

Empirical formula:

Pb2.05(Si3.89Al1.11)O11(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.13

1

4.99

1.0079470

1.0079470

Oxygen

O

25.36

12

59.85

15.9994300

191.9931600

Aluminium

Al

3.96

1.11

5.54

26.9815382

29.9495074

Silicon

Si

14.43

3.89

19.40

28.0855300

109.2527117

Lead

Pb

56.11

2.05

10.22

207.2100000

424.7805000

Analysis wt%

SiO2 : 32.19, Al2O3 : 6.83, PbO : 59.78, H2O : 1.21 (Ref: berechnet)

Strunz 9th edition incl. updates

9.G.

9: Silikate (Germanate)
G: Gerüstsilikate (Tektosilikate) mit zeolithischem H2O; Familie der Zeolithe

Lapis Classification

VIII/H.35-030

VIII: SILIKATE
H: Schichtsilikate
35: Schichtsilikate mit anderen Einfachschichten [Si6O15] 6- u.a.

Classification by Hölzel

9: SILICATES
F: Tektosilicates
?:

IMA status

anerkannt Dez. 2010 - CNMNC Newsletter No. 7, February 2011, pages 29-30; Mineralogical Magazine, 75, 27-31

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

Diaphaneity (Transparency)

durchsichtig

Lustre

Glasglanz

RI value α / ω / n

nα = 1.690

RI value β

nβ = 1.694

RI value γ / ε

nγ = 1.700

2V angle

2Vmeas = 65(2)°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

I2/m

Cell parameters a (Å)

7.8356(6)

Cell parameters b (Å)

13.913(1)

Cell parameters c (Å)

10.278(1)

Cell parameters a/b or c/a

0.563

Cell parameters c/b

0.739

Cell parameters α

90°

Cell parameters β

92.925(4)

Cell parameters γ

90°

Z

4

Volume (ų)

1119.014

Crystal structure

Neuer Strukturtyp, Struktur bestimmt

X-Ray Powder Diffraction

6.821(78), 6.075(100), 3.990(99), 3.481(81), 3.478(82), 3.322(76), 2.842(91), 2.753(87)

XRD chart Rongibbsite

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

Morphology

abgeflachte prismatische, farblose Kristalle, Größe bis 0.70 × 0.20 × 0.05 mm, oft in Büscheln

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5

Density (g/cm³)

4,43 ber.

4.493 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen nach {100}

Tenacity

spröde

Chemical Properties and Tests

unlöslich in Wasser, Aceton, Salzsäure
Raman-Spekrum ist publiziert

(Co-)Type locality

(Co-)Type locality

USA/Arizona/Maricopa Co./Belmont Mountain/Osborn District/Big Horn Mts/Unnamed prospect near Evening Star mine

Type material

Mineral Museum of the University of Arizona, Tucson, Arizona, USA

Collection number of type material

19292

Paragenesis of type material

Wickenburgit, Fornacit, Mimetesit, Murdochit, Creaseyit

Preface

Occurrences

Sekundärmineral

Name from

TGMS Mitglied Ronald Bradford Gibbs, der das Mineral fand; Mineraliensammler und Bergbauingenieur in Tucson, Arizona

Author (Name, Year)

Yang H, Downs R T, Evans S H, Jenkins R A, Bloch E M (2013)

References

Yang H, Downs R T, Evans S H, Jenkins R A, Bloch E M: Rongibbsite, Pb2(Si4Al)O11(OH), a new zeolitic aluminosilicate mineral with an interrupted framework from Maricopa County, Arizona, U.S.A. American Mineralogist Vol. 98 (2013) S. 236-241.

https://rruff.info/rongibb/display=default/

Other languages

German

Rongibbsit

English

Rongibbsite

CNMNC (IMA)-Number

IMA 2010-055

CNMNC symbol

Symbol

Rgb

IDs

GUSID (Global unique identifier short form) AWNWg2pMPEu7oY-4qSMawA
GUID (Global unique identifier) 83566301-4C6A-4B3C-BBA1-8FB8A9231AC0
Database ID 6973