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Pascoite (Pascoit)

Pictures (13 Images total)

Pascoit
Views (File:
1216385648
): 1486
Pascoit
FO: Sunday #2 Mine, Telluride, San Miguel Co., Colorado, USA; gelbbraune nierig-traubige Kristallaggregate; BB: 2,5 mm
Copyright: pikosteine; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A006179, Donator: eschuhbauer
Location: USA/Colorado/San Miguel Co./Slick Rock District/Sunday Mine Complex/Sunday No. 2 Mine
Mineral: Pascoite
Image: 1216385648
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Pascoit (SNr: A006179)

FO: Sunday #2 Mine, Telluride, San Miguel Co., Colorado, USA; gelbbraune nierig-traubige Kristallaggregate; BB: 2,5 mm
Collection: Lithothek der Münchener Micromounter
Copyright: pikosteine
Contribution: Münchener Micromounter 2008-07-18
Locality: Sunday No. 2 Mine / Sunday Mine Complex / Slick Rock District / San Miguel Co. / Colorado / USA
Pascoit
Views (File:
1274478746
): 1169
Pascoit
Größe: 45x22 mm; Fundort: Burro Mine, Slick Rock District, San Miguel Co., Colorado, USA
Copyright: John Sobolewski; Contribution: slugslayer
Location: USA/Colorado/San Miguel Co./Slick Rock District/Burro Mine
Mineral: Pascoite
Image: 1274478746
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Pascoit

Größe: 45x22 mm; Fundort: Burro Mine, Slick Rock District, San Miguel Co., Colorado, USA
Copyright: John Sobolewski
Contribution: slugslayer 2010-05-21
Locality: Burro Mine / Slick Rock District / San Miguel Co. / Colorado / USA
Pascoit
Views (File:
1354977110
): 934
Pascoit
Kugelige orange Kristalle, BB = 2,5 mm, Fundort: Vanadium Queen Mine, Paradox Valley District, Paradox Valley, San Juan Co., Utah, USA.
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A026775, Donator: eschuhbauer
Location: USA/Utah/San Juan Co./La Sal/La Sal Creek/Vanadium Queen Mine
Mineral: Pascoite
Image: 1354977110
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Pascoit (SNr: A026775)

Kugelige orange Kristalle, BB = 2,5 mm, Fundort: Vanadium Queen Mine, Paradox Valley District, Paradox Valley, San Juan Co., Utah, USA.
Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2012-12-08
Locality: Vanadium Queen Mine / La Sal Creek / La Sal / San Juan Co. / Utah / USA
Pascoit
Views (File:
1185089480
): 1235
Pascoit
als rot-gelb-brauner Anflug; Fundort: Lexington Mine, Paradox Valley, Uravan Distr., Colorado, USA; Größe bzw. Bildausschnitt: 8 x 5 mm
Copyright: rtbstone; Contribution: rtbstone
Collection: rtbstone
Location: USA/Colorado/Montrose Co./Uravan District/Paradox Valley (Las Sal District Colorado)
Mineral: Pascoite
Image: 1185089480
License: Usage for Mineralienatlas project only
Pascoit

als rot-gelb-brauner Anflug; Fundort: Lexington Mine, Paradox Valley, Uravan Distr., Colorado, USA; Größe bzw. Bildausschnitt: 8 x 5 mm
Collection: rtbstone
Copyright: rtbstone
Contribution: rtbstone 2007-07-22
Locality: Paradox Valley (Las Sal District Colorado) / Uravan District / Montrose Co. / Colorado / USA
orangegelbe Pascoit-Krusten
Views (File:
1152572488
): 1378
orangegelbe Pascoit-Krusten
Größe: 2cm; Fundort: Uran-Mine 21, Pribram, Böhmen, Tschechien
Copyright: Maurice de Graaf; Contribution: slugslayer
Location: Tschechien/Mittelböhmen (Středočeský kraj)/Pribram, Bezirk/Pribram, Revier/Uran-Erzrevier/Háje/Uranschacht 21
Mineral: Pascoite
Image: 1152572488
License: Usage for Mineralienatlas project only
orangegelbe Pascoit-Krusten

Größe: 2cm; Fundort: Uran-Mine 21, Pribram, Böhmen, Tschechien

Copyright: Maurice de Graaf
Contribution: slugslayer 2006-07-11
Locality: Uranschacht 21 / Háje / Uran-Erzrevier / Pribram, Revier / Pribram, Bezirk / Mittelböhmen (Středočeský kraj) / Tschechien
Pascoit
Views (File:
1274480259
): 524
Pascoit
Größe: 45x32 mm; Fundort: Sunday Mine, San Miguel Co., Colorado, USA
Copyright: John Sobolewski; Contribution: slugslayer
Location: USA/Colorado/San Miguel Co./Slick Rock District/Sunday Mine Complex/Sunday Mine
Mineral: Pascoite
Image: 1274480259
License: Usage for Mineralienatlas project only
Pascoit

Größe: 45x32 mm; Fundort: Sunday Mine, San Miguel Co., Colorado, USA
Copyright: John Sobolewski
Contribution: slugslayer 2010-05-22
Locality: Sunday Mine / Sunday Mine Complex / Slick Rock District / San Miguel Co. / Colorado / USA

Collectors Summary

Color rotorange, gelbbraun
Streak color cadmium-gelb
Lustre Glasglanz, Subdiamantglanz
Hardness (Mohs) 2.5
Cleavages ausgeprägt {010}
Fracture muschelig
Solubility +++ H2O
Crystal System monoklin, C2/m

Chemism

Chemical formula

Ca3V5+10O28·17H2O

Chemical composition

Calcium, Sauerstoff, Vanadium, Wasserstoff

Unit weight: 1383.894848 u; Number of atoms in the formula: 92

Info

Empirical formula:

Ca3V10O28·17H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

2.48

34

36.96

1.0079470

34.2701980
Oxygen

O

52.03

45

48.91

15.9994300

719.9743500
Calcium

Ca

8.69

3

3.26

40.0784000

120.2352000
Vanadium

V

36.81

10

10.87

50.9415100

509.4151000

Analysis wt%

CaO : 12.60, V2O5 : 64.60, H2O : 21.60 (Ref: Dana, 7th ed. 2)

Strunz 9th edition incl. updates

4.HC.05

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
H: V[5,6] Vanadate
C: [6]-Gruppenvanadate (Sorovanadate)
05:Pascoit-Gruppe

Lapis Classification

IV/G.01-030

IV: OXIDE
G: Vanadiumoxide (Polyvanadate mit V4+/5+)
1: Gruppenvanadate

Classification by Hölzel

4.GA.680

4: OXIDES
G: Vanadin, Uranyl Oxides and Hydroxides
A: Vanadin Oxides and Hydroxides, VBronzes
6: Valency for V: 5 Hummerite-Group

Dana 8th edition

47.02.01.01

47: Vanadium Oxysalts
02: Vanadium Oxysalts (VmOn)
01: Pascoite Group

IMA status

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

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Pascoite supergroup  ⇒ Pascoite group
Decavanadate family

Optical Properties

Color

rotorange, gelbbraun

Streak color

cadmium-gelb

Change in color

dreckiges gelb auf Stellen der Dehydration

Diaphaneity (Transparency)

durchscheinend

Lustre

Glasglanz, Subdiamantglanz

max. Birefringence

0.050
Birefringence chart\! Pascoite title=Birefringence chart Pascoite

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

1.775

RI value β

1.815

RI value γ / ε

1.825

Ri mean

1.805

2V angle

Biaxial (-) 50° - 56° (gemessen)

Orientation

X = b

Dispersion

stark gekreuzt

Absorption

Z > Y > X

Pleochroism

X = hell cadmium-gelb; Y = cadmium gelb, Z= orange

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

19.586

Cell parameters b (Å)

10.141

Cell parameters c (Å)

10.911

Cell parameters a/b or c/a

1.931

Cell parameters c/b

1.076

Cell parameters α

90°

Cell parameters β

120.82

Cell parameters γ

90°

Z

2

Volumne (ų)

1861.117

X-Ray Powder Diffraction

8.8(60),
7.3(70),
5.5(100),
5.1(80),
4.67(100),
4.45(60),
3.34(50),
3.01(70)
XRD chart Pascoite

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)

2.5

VHN (Hardness Vickers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.45 (gemessen) 2.469 (berechnet)

2.469 ( ρ calc. Mineralienatlas )

Cleavages

ausgeprägt {010}

Fracture

muschelig

Instability

+++ H2O

(Co-)Type locality

(Co-)Type locality

Peru/Pasco, Region/Pasco, Provinz/Huayllay, Distrikt/Ragra Mine (Minasragra)

Preface

Author (Name, Year)

Hillebrand & Merwin & Wright, 1914

References

Proceedings of the American Philosophical Society 53 (1914), 31

Canadian Mineralogist 43 (2005), 1379-1386

IMA group assignments

Other languages

German

Pascoit

English

Pascoite

French

Pascoite

Spanish

Pascoíta

Russian

Паскоит

Traditional Chinese

橙釩鈣石

Simplified Chinese

橙钒钙石

CNMNC symbol

Symbol

Pas

Locations with GPS information