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Steigerite

Pictures (4 Images total)

Steigerit
Views (File:
1586176516
): 223
Steigerit
USA/Kalifornien (California)/San Benito Co./New Idria District/Yellow Cat Mine. Bildbreite 1,3 mm
Copyright: Ulrich Baumgärtl; Contribution: Ulrich Baumgärtl
Collection: Ulrich Baumgärtl
Location: USA/Kalifornien (California)/San Benito County/New Idria District/Yellow Cat Mine (Junnila Mine)
Mineral: Steigerite
Image: 1586176516
Rating: 5 (votes: 1)
License: Usage for Mineralienatlas project only
Steigerit

USA/Kalifornien (California)/San Benito Co./New Idria District/Yellow Cat Mine. Bildbreite 1,3 mm
Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: Ulrich Baumgärtl 2020-04-06
Locality: Yellow Cat Mine (Junnila Mine) / New Idria District / San Benito County / Kalifornien (California) / USA
Steigerite
Views (File:
1401633312
): 642
Steigerite
Yellow mass; FOV 5 x 3 mm; Cactus Rat Mine, Cisco, Grand Co., Utah, USA
Copyright: Roberto Bosi; Contribution: Roberto Bosi
Collection: Roberto Bosi
Location: USA/Utah/Grand County/Yellow Cat District/Cisco/Cactus Rat Mine
Mineral: Steigerite
Image: 1401633312
License: Usage for Mineralienatlas project only
Steigerite

Yellow mass; FOV 5 x 3 mm; Cactus Rat Mine, Cisco, Grand Co., Utah, USA
Collection: Roberto Bosi
Copyright: Roberto Bosi
Contribution: Roberto Bosi 2014-06-01
Locality: Cactus Rat Mine / Cisco / Yellow Cat District / Grand County / Utah / USA
Steigerit
Views (File:
1586175799
): 187
Steigerit
USA/Kalifornien (California)/San Benito Co./New Idria District/Yellow Cat Mine. Bildbreite 1,2 mm
Copyright: Ulrich Baumgärtl; Contribution: Ulrich Baumgärtl
Collection: Ulrich Baumgärtl
Location: USA/Kalifornien (California)/San Benito County/New Idria District/Yellow Cat Mine (Junnila Mine)
Mineral: Steigerite
Image: 1586175799
License: Usage for Mineralienatlas project only
Steigerit

USA/Kalifornien (California)/San Benito Co./New Idria District/Yellow Cat Mine. Bildbreite 1,2 mm
Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: Ulrich Baumgärtl 2020-04-06
Locality: Yellow Cat Mine (Junnila Mine) / New Idria District / San Benito County / Kalifornien (California) / USA
Steigerit
Views (File:
1586175982
): 199
Steigerit
USA/Kalifornien (California)/San Benito Co./New Idria District/Yellow Cat Mine. Bildbreite 1,5 mm
Copyright: Ulrich Baumgärtl; Contribution: Ulrich Baumgärtl
Collection: Ulrich Baumgärtl
Location: USA/Kalifornien (California)/San Benito County/New Idria District/Yellow Cat Mine (Junnila Mine)
Mineral: Steigerite
Image: 1586175982
License: Usage for Mineralienatlas project only
Steigerit

USA/Kalifornien (California)/San Benito Co./New Idria District/Yellow Cat Mine. Bildbreite 1,5 mm
Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: Ulrich Baumgärtl 2020-04-06
Locality: Yellow Cat Mine (Junnila Mine) / New Idria District / San Benito County / Kalifornien (California) / USA

You find additional specimen at the Geolitho Museum

Collectors Summary

Color kanariengelb
Streak color gelb
Hardness (Mohs) 2.5
Solubility +++ Säuren, - H2O
Crystal System monoklin, P21, P21/m

Chemism

Chemical formula

AlVO4·3H2O

Chemical composition

Aluminium, Sauerstoff, Vanadium, Wasserstoff

Unit weight: 195.9667402 u; Number of atoms in the formula: 15

Info

Empirical formula:

AlVO4·3H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

3.09

6

40.00

1.0079470

6.0476820
Oxygen

O

57.15

7

46.67

15.9994300

111.9960100
Aluminium

Al

13.77

1

6.67

26.9815382

26.9815382
Vanadium

V

25.99

1

6.67

50.9415100

50.9415100

Analysis wt%

Al2O3 : 26.00, Fe2O3 : 0.90, Cr2O3 : 0.95, CaO : 1.20, V2O5 : 39.04, P2O5 : 4.91, SO3 : 0.66, H2O : 27.30 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 87)

Strunz 9th edition incl. updates

8.CE.65

8: Phosphate, Arsenate, Vanadate
C: Phosphate ohne weitere Anionen, mit H2O
E: Mit ausschließlich mittelgroßen Kationen, RO4:H2O = 1:2.5
65:Steigerit-Gruppe

Lapis Classification

VII/C.12-020

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
C: Wasserhaltige Phosphate, ohne fremde Anionen
12: Kleine und mittelgroße Kationen: Be und Al-Mn-Fe-Cu-Zn-Mg

Classification by Hölzel

8.CC.360

8: PHOSPHATES ARSENATES VANADATES
C: Phosphates (-Anions +Water)
C: Valency: 3,4 C medium
3: XO4/H2O=1/3 Konickite-Group

Dana 8th edition

40.04.05.01

40: Hydrated Phosphates, etc
04: Hydrated Phosphates, etc where A+++ XO4 · x(H2O)

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

kanariengelb

Streak color

gelb

max. Birefringence

0.028
Birefringence chart\! Steigerite title=Birefringence chart Steigerite

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

1.720

RI value β

1.730

RI value γ / ε

1.748

Ri mean

1.733

2V angle

Biaxial (+) 75°

Optical Data Luminescence

Color LW-UV (365nm)

  

blassgelb

LW-UV Intensity

schwach

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

monoklin

Class (H-M)

2, 2/m

Space Group number

4, 11

Space Group

P21, P21/m

Cell parameters a (Å)

11.840

Cell parameters b (Å)

25.00

Cell parameters c (Å)

11.040

Cell parameters a/b or c/a

0.474

Cell parameters c/b

0.442

Cell parameters α

90°

Cell parameters β

111.17

Cell parameters γ

90°

Z

24

Volume (ų)

3047.303

X-Ray Powder Diffraction

12.52(50),
3.09(40),
2.93(100),
2.21(40),
2.18(50),
1.897(50),
1.758(50),
1.426(40)
XRD chart Steigerite

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

Physical Properties

Hardness (Mohs)

2.5

VHN (Hardness Vickers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.55 (gemessen)

2.563 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, - H2O

(Co-)Type locality

(Co-)Type locality

USA/Colorado/San Miguel County/Gypsum Valley District/Sullivan Brothers Claim

Preface

Author (Name, Year)

Henderson, 1935

References

Handbook of Mineralogy (Anthony et al.), 4 (2000), 560

Other languages

German

Steigerit

Spanish

Steigerita

French

Steigerite

English

Steigerite

Russian

Штейгерит

Alternative Name

German

Chromsteigerit

Spanish

Chromsteigerita

English

Chromsteigerite

Italian

Cromsteigerita

CNMNC symbol

Symbol

Sgr

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 1FTPTJLY80Sf_D_XBYnK7g
GUID (Global unique identifier) 4CCF54D4-D892-44F3-9FFC-3FD70589CAEE
Database ID 3616