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Simplotite

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Big Photo

Uravan District, Montrose Co., Colorado, USA
© Brent Thorne




Formula:
CaV
4+
4
O
 
9
 · 5H
 
2
O
System:MonoclinicColour:Black, greenish black
Hardness:1
Name:Named after J.R. Simplot, owner of the J. R. Simplot Mining Company, Boise, Idaho, owner of the type locality.
This page provides mineralogical data about Simplotite.

Classification of Simplotite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:7/E.03-20
Nickel-Strunz 10th (pending) edition ID:4.HG.20

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
G : Unclassified V oxides
Dana 8th edition ID:47.4.8.1

47 : VANADIUM OXYSALTS
4 : Vanadium Bronzes
Hey's CIM Ref.:7.12.12

7 : Oxides and Hydroxides
12 : Oxides of V, Nb and Ta
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Type Occurrence of Simplotite

Type Locality:Peanut Mine, Bull Canyon, Uravan District, Montrose Co., Colorado, USA
Year of Discovery:1956

Physical Properties of Simplotite

Lustre:Vitreous
Colour:Black, greenish black
Comment:Thin flakes yellow-green
Streak:Brownish black
Hardness (Mohs):1
Cleavage:Distinct/Good
on {010}
Density (measured):2.64 g/cm3

Crystallography of Simplotite

Crystal System:Monoclinic
Cell Parameters:a = 8.39Å, b = 17.02Å, c = 8.37Å
β = 90.42°
Ratio:a:b:c = 0.493 : 1 : 0.492
Unit Cell Volume:V 1,195.19 ų (Calculated from Unit Cell)
Morphology:Platy

Optical Data of Simplotite

Type:Biaxial (-)
RI values: nα = 1.705 nβ = 1.767 nγ = 1.769
2V:Measured: 25° , Calculated: 18°
Maximum Birefringence:δ = 0.064

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r > v weak
Pleochroism:Visible
Comments:Yellow to green

Chemical Properties of Simplotite

Formula:
CaV
4+
4
O
 
9
 · 5H
 
2
O
Essential elements:Ca, H, O, V
All elements listed in formula:Ca, H, O, V

Relationship of Simplotite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.HG.05Fervanite
Fe
3+
4
V
5+
4
O
 
16
 · 5H
 
2
O
4.HG.10Huemulite
Na
 
4
Mg(V
 
10
O
 
28
) · 24H
 
2
O
4.HG.15Vanalite
NaAl
 
8
V
 
10
O
 
38
 · 30H
 
2
O
4.HG.25Vanoxite
V
4+
4
V
5+
2
O
 
13
 · 8H
 
2
O
4.HG.30Navajoite
Fe
3+
 
V
5+
9
O
 
24
 · 12H
 
2
O
4.HG.35Delrioite
CaSr(V
 
2
O
 
6
)(OH)
 
2
 · 3H
 
2
O
4.HG.40Metadelrioite
CaSr(V
 
2
O
 
6
)(OH)
 
2
4.HG.45Barnesite
(Na,Ca)V
 
6
O
 
16
 · 3H
 
2
O
4.HG.50Hendersonite
(Ca,Sr)
 
1.3
V
 
6
O
 
16
 · 6H
 
2
O
4.HG.55Grantsite
(Na,Ca)V
 
6
O
 
16
 · 4H
 
2
O
4.HG.60Lenoblite
V
4+
2
O
 
4
 · 2H
 
2
O
4.HG.65Satpaevite
Al
 
12
V
4+
2
V
5+
6
O
 
37
 · 30H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
7.12.1Montroseite
(V
3+
 
,Fe
3+
 
)O(OH)
7.12.2 Scherbinaite
7.12.3Paramontroseite
V
4+
 
O
 
2
7.12.4Häggite
V
3+
 
V
4+
 
O
 
2
(OH)
 
3
7.12.5Duttonite
V
4+
 
O(OH)
 
2
7.12.6Doloresite
V
4+
3
O
 
4
(OH)
 
4
7.12.7Lenoblite
V
4+
2
O
 
4
 · 2H
 
2
O
7.12.8Navajoite
Fe
3+
 
V
5+
9
O
 
24
 · 12H
 
2
O
7.12.9Vanoxite
V
4+
4
V
5+
2
O
 
13
 · 8H
 
2
O
7.12.10Bariandite
Al
 
0.6
(V
5+
 
,V
4+
 
)
 
8
O
 
20
 · 9H
 
2
O
7.12.11Corvusite
(Na,K,Ca,Mg)
 
2
(V
5+
 
,V
4+
 
,Fe
2+
 
)
 
8
O
 
20
 · 6-10H
 
2
O
7.12.13Kyzylkumite
BeV
3+
2
TiO
 
6
7.12.14Schreyerite
V
3+
2
Ti
 
3
O
 
9
7.12.15Berdesinskiite
V
3+
2
TiO
 
5
7.12.16Tivanite
V
3+
 
TiO
 
3
(OH)
7.12.17Mannardite
Ba
 
x
Ti
 
8-2x
V
 
2x
O
 
16
·2-xH
 
2
O
7.12.18Karelianite
V
3+
2
O
 
3
7.12.19Coulsonite
Fe
2+
 
V
3+
2
O
 
4
7.12.20Nolanite
(V
3+
 
,Fe
3+
 
,Fe
2+
 
,Ti)
 
10
O
 
14
(OH)
 
2
7.12.21Vuorelainenite
(Mn,Fe)(V,Cr)
 
2
O
 
4
7.12.22Tantite
Ta
 
2
O
 
5
7.12.23Kimrobinsonite
(Ta,Nb)(OH)
 
5-2x
(O,CO
 
3
)
 
x
 ; x near 1.2

Other Names for Simplotite

Other Languages:
German:Simplotit
Spanish:Simplotita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Simplotite

Reference List:

- +
Science (1956), 123, 1078.

American Mineralogist (1958): 43: 16-24.

Internet Links for Simplotite

Search Engines:
  • Look for Simplotite on Google
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    • External Links:
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  • Look for Simplotite on Athena Mineralogy
  • Look for Simplotite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Simplotite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
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  • Edwards Minerals - Fine Specimens
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  • Pricedownminerals.com - Reverse Auctions and Shop
  • Find Simplotite on www.crystalclassics.co.uk
  • Wilensky Fine Minerals
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  • Top quality minerals from Kristalle of California
  • Search for Simplotite from all mineral dealers at minfind.com
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Buy fine minerals and gemstones from Pala International
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    • Localities for Simplotite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Germany
     
    • Thuringia
      • Gera
        • Ronneburg U deposit
    		T. Witzke et al. (2001) American Mineralogist 86, 1081-1086
    USA
     
    • Colorado
      • Montrose Co.
        • Uravan District
    		Minerals of Colorado (1997) E.B. Eckels
          • Bull Canyon
    		Science (1956) 123, 1078; "Minerals of Colorado, updated & revised", p. 444, by Eckel, Edwin B., 1997
          • Paradox Valley
    		Minerals of Colorado 2nd ed.
            • Jo Dandy Mine (Paradox D; Hummer; C; Blackburn; Yellow Bird No. 1; Oversight; Broker)
    		Minerals of Colorado (1997) E.B. Eckels
      • San Miguel Co.
        • Slick Rock District
    		Minerals of Colorado (1997) E.B. Eckels
    Minerals of Colorado (1997) E.B. Eckels; Am Min (1958) 43:16-24
    • Utah
      • San Juan Co.
        • La Sal Quadrangle
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
        • Paradox Valley
          • Paradox Valley District
            • La Sal Creek Canyon
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
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