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Putnisite (Putnisit)

Pictures (2 Images total)

Putnisit
Views (File:
1427830742
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Putnisit
Polar Bear, Dundas Shire, Westaustralien, Australien. BB: 1,9mm
Copyright: Mabu; Contribution: Mabu
Collection: Mabu
Location: Australien/Western Australia/Dundas Shire/Norseman/Lake Cowan/Polar Bear-Halbinsel
Mineral: Putnisite
Image: 1427830742
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Putnisit

Polar Bear, Dundas Shire, Westaustralien, Australien. BB: 1,9mm

Collection: Mabu
Copyright: Mabu
Contribution: Mabu 2015-03-31
Locality: Polar Bear-Halbinsel / Lake Cowan / Norseman / Dundas Shire / Western Australia / Australien
Putnisit
Views (File:
1390607327
): 1347
Putnisit
Polar Bear, Dundas Shire, Westaustralien, Australien. BB: 1,0mm
Copyright: Mabu; Contribution: Mabu
Collection: Mabu
Location: Australien/Western Australia/Dundas Shire/Norseman/Lake Cowan/Polar Bear-Halbinsel
Mineral: Putnisite
Image: 1390607327
License: Usage for Mineralienatlas project only
Putnisit

Polar Bear, Dundas Shire, Westaustralien, Australien. BB: 1,0mm

Collection: Mabu
Copyright: Mabu
Contribution: Mabu 2014-01-24
Locality: Polar Bear-Halbinsel / Lake Cowan / Norseman / Dundas Shire / Western Australia / Australien

Collectors Summary

Color violett
Streak color rosa
Lustre Glasglanz
Hardness (Mohs) 1.5 - 2
Cleavages vollkommen {100}; gut {010}, {001}
Fracture uneben
Crystal System orthorhombisch, Pnma

Chemism

Chemical formula

SrCa4Cr3+8(CO3)8SO4(OH)16·23H2O

Empirical formula (analysis)

Cr3+8.02Ca3.78Sr1.08Na0.11Cu2+0.07Mg0.04Ba0.02[(SO4)0.96(SiO4)0.03]0.99(CO3)7.98(OH)16.19Cl0.15·24.84H2O

Chemical composition

Calcium, Chrom, Strontium, Kohlenstoff, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 1974.905904525 u; Number of atoms in the formula: 156.9905

Info

Empirical formula:

Cr8.02Ca3.78Sr1.08Na0.11Cu0.07Mg0.04Ba0.02[(SO4)0.96(SiO4)0.03]0.99(CO3)7.98(OH)16.19Cl0.15·24.84H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

3.36

65.87

41.96

1.0079470

66.3934689

Carbon

C

4.85

7.98

5.08

12.0107800

95.8460244

Oxygen

O

55.81

68.89

43.88

15.9994300

1,102.2071325

Sodium

Na

0.13

0.11

0.07

22.9897702

2.5288747

Magnesium

Mg

0.05

0.04

0.03

24.3050600

0.9722024

Silicon

Si

0.04

0.03

0.02

28.0855300

0.8341402

Sulfur

S

1.54

0.95

0.61

32.0655000

30.4750512

Chlorine

Cl

0.27

0.15

0.10

35.4532000

5.3179800

Calcium

Ca

7.67

3.78

2.41

40.0784000

151.4963520

Chromium

Cr

21.12

8.02

5.11

51.9961600

417.0092032

Copper

Cu

0.23

0.07

0.04

63.5463000

4.4482410

Strontium

Sr

4.79

1.08

0.69

87.6210000

94.6306800

Barium

Ba

0.14

0.02

0.01

137.3277000

2.7465540

Analysis wt%

Na2O : 0.17, MgO : 0.08, CaO : 10.81, SrO : 5.72, BaO : 0.12, CuO : 0.29, Cr2O3 : 31.13, SO3 : 3.95, SiO2 : 0.08, Cl− : 0.28, CO2 (calc) : 17.94, H2O (calc) : 30.30, O=Cl− : 0.06, Total : 100.81 wt %

Strunz 9th edition incl. updates

7

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
7:
7:

Lapis Classification

V/E.03-100

V: NITRATE, CARBONATE UND BORATE
E: Wasserhaltige Carbonate, mit fremden Anionen
3: Hydrotalkit-Gruppe

Classification by Hölzel

5.DC.115

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
D: Carbonates (+Anions +Water)
C: Alumohydrocalcite-Group

IMA status

anerkannt - März 2012 - CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817

Mineral status

anerkanntes Mineral

Optical Properties

Color

violett

Streak color

rosa

Diaphaneity (Transparency)

durchscheinend

Lustre

Glasglanz

max. Birefringence

0.047

Birefringence chart\! Putnisite title=Birefringence chart Putnisite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

α = 1.552(3)

RI value β

β = 1.583(3)

RI value γ / ε

γ = 1.599(3)

Ri mean

1.578

2V angle

Biaxial(-)

Pleochroism

ausgeprägt; X blass bläulich grau, Y blass violett, Z blass violett

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

62

Space Group

Pnma

Cell parameters a (Å)

15.351

Cell parameters b (Å)

20.421

Cell parameters c (Å)

18.270

Cell parameters a/b or c/a

0.752

Cell parameters c/b

0.895

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

5727.33

Crystal structure

Neuer Strukturtyp, Struktur bestimmt

X-Ray Powder Diffraction

13.577(100), 7.659(80), 7.095(10), 5.084(19), 4.901(13), 3.385(7), 3.689(16), 3.594(7)

XRD chart Putnisite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

1.5 - 2

Density (g/cm³)

2.20(3) (gemessen) 2.23 (berechnet)

2.29 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen {100}; gut {010}, {001}

Fracture

uneben

(Co-)Type locality

(Co-)Type locality

Australien/Western Australia/Dundas Shire/Norseman/Lake Cowan/Polar Bear-Halbinsel

Type material

South Australian Museum, Adelaide, South Australia, Australia;
Canadian Museum of Nature, Ottawa, Canada

Collection number of type material

G33429 (Australien); 86133 (Kanada)

Paragenesis of type material

Quarz

Preface

Name from

Zu Ehren von Dr. Christine Putnis und Prof. Andrew Putnis, beide von der Universität Münster, Deutschland; für ihre hervorragenden Beiträge zur Mineralogie, insbesondere zu Phasenumwandlungen an Mineralien und mineralische Oberflächenwissenschaften (vor allem Kristallwachstum und Auflösungsprozesse)

Author (Name, Year)

Peter Elliott, Gerald Giester, Ralph Rowe und Allan Pring (2012)

References

CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817

Elliott, P., Giester, G., Rowe, R. & Pring, A. - Putnisite, SrCa4Cr3+8(CO3)8SO4(OH)16·25H2O, a new mineral from Western Australia: description and crystal structure. Mineral. Mag. 78 (2014), 131-144.

Lapis Jg. 39, Nr 5, Mai 2014

Other languages

German

Putnisit

English

Putnisite

CNMNC (IMA)-Number

IMA 2011-106

CNMNC symbol

Symbol

Pni

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 2c1gDvDed0eabZoxUvyYmg
GUID (Global unique identifier) 0E60CDD9-DEF0-4777-9A6D-9A3152FC989A
Database ID 7387



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