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Hydropascoite

A valid IMA mineral species
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Formula:
Ca3(V10O28) · 24H2O
Colour:
dark yellow green
Lustre:
Vitreous
Hardness:
Specific Gravity:
2.38
Crystal System:
Triclinic
Name:
Named after its similarity to pascoite, as it is the higher hydrate of the same substance (calcium decavanadate)
First found in the main tunnel level of the Packrat mine. Related to pascoite. Also similar to kokinosite and nashite in terms of being both a decavanadate and a tetracosahydrate.


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Unique IdentifiersHide

Mindat ID:
47934
Long-form identifier:
mindat:1:1:47934:9
GUID
(UUID V4):
ac89fc1e-2e76-4447-ada8-88b66fe9a12e

Classification of HydropascoiteHide

Approved
Approval year:
2016
First published:
2017
4.HC.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
C : [6]-Sorovanadates

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
HpasIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of HydropascoiteHide

Vitreous
Transparency:
Transparent
Colour:
dark yellow green
Streak:
pistachio green
Hardness:
1½ on Mohs scale
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
2.38(2) g/cm3 (Measured)    2.332 g/cm3 (Calculated)

Optical Data of HydropascoiteHide

Type:
Biaxial (-)
RI values:
nα = 1.730(5) nβ = 1.780(5) nγ = 1.790(5)
2V:
Measured: 54.1° (6), Calculated: 47.1°
Max Birefringence:
δ = 0.060
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
extreme
Pleochroism:
Visible
Comments:
X=bluish green, Y=orange, Z = yellowish green

Chemical Properties of HydropascoiteHide

Formula:
Ca3(V10O28) · 24H2O

Crystallography of HydropascoiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 10.0870(2) Å, b = 11.0708(2) Å, c = 21.811(1) Å
α = 94.112(7)°, β = 96.053(7)°, γ = 116.398(8)°
Ratio:
a:b:c = 0.911 : 1 : 1.97
Unit Cell V:
2,150.21 ų (Calculated from Unit Cell)
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.70 Å(31)
9.77 Å(28)
8.92 Å(100)
7.75 Å(20)
7.41 Å(22)
6.91 Å(20)
3.524 Å(13)
2.988 Å(14)

Geological EnvironmentHide

Paragenetic Mode(s):

Type Occurrence of HydropascoiteHide

General Appearance of Type Material:
blades up to 2 mm in length
Place of Conservation of Type Material:
Mineralogical collections of the Natural History Museum of Los Angeles County, Los Angeles, California, USA (catalogue number 66267)
Reference:
Kampf, A.R., Nash, B.P., Marty, J., Hughes, J.M., Rose, T.P. (2017) Hydropascoite, Ca3 (V10O28)· 24H2O, a new decavanadate mineral from the Packrat mine, Mesa County, Colorado. The Canadian Mineralogist: 55(2): 207-217.

Synonyms of HydropascoiteHide

Related Minerals - Strunz-mindat GroupingHide

4.HC.BeckettiteCa2V6Al6O20Tric. 1 : P1
4.HC.Ammoniolasalite(NH4)2Mg2(H2O)20] [V10O28]Mon. 2/m : B2/b
4.HC.Protocaseyite[Al4(OH)6(H2O)12][V10O28] · 8H2OTric. 1 : P1
4.HC.05PascoiteCa2Ca(V10O28) · 17H2OMon. 2 : B2
4.HC.05LasaliteNa2Mg2(V10O28) · 20H2OMon. 2/m : B2/b
4.HC.05MagnesiopascoiteCa2Mg(V10O28) · 16H2OMon. 2/m : B2/m
4.HC.05Rakovanite(NH4)3Na3(V10O28) · 12H2OMon. 2/m
4.HC.05HughesiteNa3Al(V10O28) · 22H2OTric. 1 : P1
4.HC.10HummeriteK2Mg2(V10O28) · 16H2OTric. 1 : P1
4.HC.15SherwooditeCa5.5(AlV4+V5+12O39) · 28H2OTet. 4/mmm (4/m 2/m 2/m) : I41/amd
4.HC.20BluestreakiteK4Mg2(V4+2V5+8O28) · 14H2OMon. 2/m
4.HC.25Wernerbaurite{(NH4)2[Ca2(H2O)14](H2O)2}{V10O28}Tric. 1 : P1
4.HC.25BurroiteCa2(NH4)2(V10O28) · 15H2OTric. 1 : P1
4.HC.30Caseyite[(V5+O2)Al10-x(OH)20-2x(H2O)18-2x]2[H2V4+V5+9O28][V5+10O28]2(Na,K,Ca)2-y(SO4)2-z · (60+8x+y+4z)H2O (x = 0-2.5; y = 0-2; z = 0-2)Mon.
4.HC.35GunteriteNa4Ca(V10O28) · 20H2O Mon. 2/m : B2/m
4.HC.40KokinositeNa2Ca2(V10O28) · 24H2OTric. 1 : P1
4.HC.45NashiteNa3Ca2[(V5+9V4+)O28] · 24H2O Mon. 2/m : P21/m
4.HC.50OkieiteMg3[V10O28] · 28H2OTric. 1 : P1
4.HC.55PostiteMg(H2O)6Al2(OH)2(H2O)8(V10O28) · 13H2O Orth. mmm (2/m 2/m 2/m) : Pccn
4.HC.60Schindlerite{(NH4)4Na2(H2O)10}{V10O28}Tric. 1 : P1

Fluorescence of HydropascoiteHide

Other InformationHide

Notes:
very slowly soluble in H2O and immediately soluble in dilute HCl.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for HydropascoiteHide

References for HydropascoiteHide

Reference List:

Localities for HydropascoiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
USA (TL)
 
  • Colorado
    • Mesa County
      • Gateway Mining District
        • Beaver Mesa
 
矿物 and/or 产地  
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