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Phosphovanadylite-Ca

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Big Photo

South Rasmussen Ridge Phosphate Mine, Soda Springs, Caribou Co., Idaho, USA
© Tom Loomis

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Formula:
Ca[V
4+
4
P
 
2
O
 
12
(OH)
 
4
] · 12H
 
2
O
System:IsometricColour:bright greenish blue
Hardness:2


Ca analogue of phosphovanadylite-Ba.

Classification of Phosphovanadylite-Ca

IMA status:Approved 2012
Nickel-Strunz 10th (pending) edition ID:8.DM.20

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
M : With large and medium-sized cations, (OH, etc.):RO4 > 2:1
Dana 8th edition ID:42.13.15.2

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
13 : Miscellaneous
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Type Occurrence of Phosphovanadylite-Ca

Type Locality:South Rasmussen Ridge Phosphate Mine, Soda Springs, Caribou Co., Idaho, USA
Place of Conservation of Type Material:Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 63578, 63579, 63580, 63581 and 63582
Year of Discovery:2010

Physical Properties of Phosphovanadylite-Ca

Lustre:Vitreous
Colour:bright greenish blue
Comment:On long-term exposure to sunlight, will gradually turn to green and then to black
Streak:very pale greenish blue
Hardness (Mohs):2
Hardness Data:Estimated
Tenacity:Brittle
Cleavage:None Observed
Density (measured):2.02(3) g/cm3
Density (calculated):2.038 g/cm3

Crystallography of Phosphovanadylite-Ca

Crystal System:Isometric
Class (H-M):4 3m - Hextetrahedral
Space Group:I4 3m
Space Group Setting:I4 3m
Cell Parameters:a = 15.441(11) Å
Unit Cell Volume:V 3,681.51 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
11.04(97)
7.788(100)
4.487(14)
3.171(46)
2.749(32)
2.458(14)
2.343(15)
1.830(16)

Chemical Properties of Phosphovanadylite-Ca

Formula:
Ca[V
4+
4
P
 
2
O
 
12
(OH)
 
4
] · 12H
 
2
O
Essential elements:Ca, H, O, P, V
All elements listed in formula:Ca, H, O, P, V

Relationship of Phosphovanadylite-Ca to other Species

Common Associates:
SphaleriteSincositeSeleniumQuartzPyrite
HydroxylapatiteFluorapatite
Related Minerals - Nickel-Strunz Grouping):

- +
8.DM.05Morinite
NaCa
 
2
Al
 
2
(PO
 
4
)
 
2
(OH)F
 
4
 · 2H
 
2
O
8.DM.05Esperanzaite
NaCa
 
2
Al
 
2
(AsO
 
4
)
 
2
(OH)F
 
4
 · 2H
 
2
O
8.DM.10Clinotyrolite
Ca
 
2
Cu
 
9
(AsO
 
4
,SO
 
4
)
 
4
(OH,O)
 
10
 · 10H
 
2
O
8.DM.10Tyrolite
Ca
 
2
Cu
 
9
(AsO
 
4
)
 
4
(CO
 
3
)(OH)
 
8
 · 11H
 
2
O
8.DM.15Betpakdalite-CaCa
[Ca
 
2
(H
 
2
O)
 
17
Ca(H
 
2
O)
 
6
][Mo
6+
8
As
5+
2
Fe
3+
3
O
 
36
(OH)]
8.DM.15Melkovite
[Ca
 
2
(H
 
2
O)
 
15
Ca(H
 
2
O)
 
6
][Mo
 
8
P
 
2
Fe
3+
3
O
 
36
(OH)]
8.DM.15Betpakdalite-NaCa
[Na
 
2
(H
 
2
O)
 
17
Ca(H
 
2
O)
 
6
][Mo
6+
8
As
5+
2
Fe
3+
3
O
 
34
(OH)
 
3
]
8.DM.20Phosphovanadylite-Ba
Ba[V
4+
4
P
 
2
O
 
8
(OH)
 
8
]·12H2O
8.DM.25Yukonite
Ca
 
3
Fe
3+
 
(AsO
 
4
)
 
2
(OH)
 
3
 · 5H
 
2
O
8.DM.30Uduminelite
Ca
 
3
Al
 
8
(PO
 
4
)
 
2
O
 
12
 · 2H
 
2
O
8.DM.35Delvauxite
CaFe
 
4
(PO
 
4
,SO
 
4
)
 
2
(OH)
 
8
 · 4-6H
 
2
O not confirmed ·
8.DM.40Santafeite
(Na,Ca,Sr)
 
12
(Mn
2+
 
,Fe
3+
 
,Al,Mg)
 
8
Mn
4+
8
(VO
 
4
)
 
16
(OH,O)
 
20
 · 8H
 
2
O

Other Names for Phosphovanadylite-Ca

Synonyms:
IMA2011-101
Other Languages:

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 Phosphovanadylite-Ca

Reference List:

- +
Kampf, A.R., Nash, B.P., Loomis, T.A. (2013) Phosphovanadylite-Ca, CaV4+4P2O8(OH)8 · 12H2O, the Ca analogue of phosphovanadylite-Ba. American Mineralogist 98, 439-441.

Am. Mineral. 98 (2013) 816. [Errata; the simplified formula is corrected]

Internet Links for Phosphovanadylite-Ca

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    • Localities for Phosphovanadylite-Ca

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    (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.
    USA
     
    • Idaho
      • Caribou Co.
        • Soda Springs
    		Kampf, A. R., Nash,P., and Loomis, T.A. (2013): Phosphovanadylite-Ca, Ca[V#4#+^4P^2O^8(OH)^8.12H^2O, the Ca analogue of phosphovanadylite-Ba. American Mineralogist 98,439-443.
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