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Rakovanite

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About RakovaniteHide

John Rakovan
Formula:
Na3(H3V10O28) · 15H2O
Colour:
orange
Lustre:
Sub-Adamantine
Hardness:
1
Specific Gravity:
2.407 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
Named in honor of Professor John Rakovan (b. 1964), Miami University, Oxford, Ohio, for his contributions to the field of mineralogy.
(Not to be confused with radovanite.)


Classification of RakovaniteHide

Approved
Approval Year:
2010
7/0.0-

7 : Phosphates, Arsenates, Vanadates
0 :
0 :

Pronounciation of RakovaniteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of RakovaniteHide

Sub-Adamantine
Transparency:
Transparent
Colour:
orange
Streak:
orange-yellow
Hardness:
Hardness Data:
Measured
Tenacity:
Brittle
Fracture:
Conchoidal
Density:
2.407 g/cm3 (Calculated)

Optical Data of RakovaniteHide

Type:
Biaxial (+)
RI values:
nα = 1.776 nβ = 1.803 nγ = 1.910
2V:
Measured: 2Vz589nm = 56(1)°
Max Birefringence:
δ = 0.134
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r < v, strong, parallel
Pleochroism:
Strong
Comments:
X light yellow, Y orangish yellow, Z yellowish orange, Z > Y > X.

Chemical Properties of RakovaniteHide

Formula:
Na3(H3V10O28) · 15H2O
IMA Formula:
Na3{H3[V10O28]} · 15H2O

Crystallography of RakovaniteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 12.0248(17) Å, b = 17.121(3) Å, c = 18.140(3) Å
β = 106.242(8)°
Ratio:
a:b:c = 0.702 : 1 : 1.06
Unit Cell V:
3,585.55 ų (Calculated from Unit Cell)
Morphology:
Crystals vary in habit from blocky to prismatic on [100], commonly exhibiting steps and striations parallel to [100].
Comment:
Space group P21/n.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.270 (100)
8.709 (78)
7.696 (81)
6.892 (63)
3.445 (24)
2.935 (42)
2.798 (31)
2.433 (24)

Type Occurrence of RakovaniteHide

General Appearance of Type Material:
Rakovanite is transparent orange, with an orange-yellow streak. Crystals of rakovanite are up to 1 mm in maximum dimension and vary in habit from blocky to prismatic on [100], commonly exhibiting steps and striations parallel to [100].
Place of Conservation of Type Material:
The two cotype specimens used in the description of the mineral are housed in the mineral collection of the Natural History Museum of Los Angeles County under catalogue numbers 63357 and 63358.
Geological Setting of Type Material:
Colorado Plateau, sandstone hosted, vanadium-uranium, role front type deposit.

Synonyms of RakovaniteHide

Relationship of Rakovanite to other SpeciesHide

Member of:
Other Members of this group:
HuemuliteNa4Mg(V10O28) · 24H2OTric.
HummeriteK2Mg2(V10O28) · 16H2OTric.
LasaliteNa2Mg2(V10O28) · 20H2OMon. 2/m : B2/b
MagnesiopascoiteCa2Mg(V10O28) · 16H2OMon. 2/m : B2/m
PascoiteCa3(V10O28) · 17H2OMon. 2 : B2

Related Minerals - Nickel-Strunz Grouping (8th Edition)Hide

7/0.0-JuonniiteCaMgSc(PO4)2(OH) · 4H2OOrth.
7/0.0-KanoneroviteNa3Mn2+(P3O10) · 12H2OMon. 2/m
7/0.0-HylbrowniteNa3Mg(P3O10) · 12H2O Mon. 2/m
7/0.0-CanutiteNaMn3[AsO4][AsO3(OH)]2Mon. 2/m : B2/b
7/0.0-CanosioiteBa2Fe3+(AsO4)2(OH)Mon. 2/m : P21/m

Other InformationHide

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

References for RakovaniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kampf, A.R., Hughes, J.M., Marty, J., Gunter, M. and Nash, B. (2010) Rakovanite, IMA 2010-052. CNMNC Newsletter No. 7, February 2010, page 29; Mineralogical Magazine, 75, 27-31.
Kampf, A.R., Hughes, J.M., Marty, J., Gunter, M.E., Nash, B. (2011): Rakovanite, Na3{H3[V10O28]}·15H2O, a new member of the pascoite family with a protonated decavanadate polyanion. Canadian Mineralogist, 49, 595-604.

Internet Links for RakovaniteHide

Localities for RakovaniteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
USA
 
  • Colorado
    • San Miguel Co.
      • Slick Rock District
        • Gypsum Valley
Collected by and in the collection of Joe Marty. p-XRD analayzed by Tony Kampf.
CNMNC Newsletter No. 7, February 2010, page 29; Mineralogical Magazine, 75, 27-31.; Kampf, A.R., Hughes, J.M., Marty, J., Gunter, M.E., Nash, B. (2011): Rakovanite, Na3{H3[V10O28]}·15H2O, a new member of the pascoite family with a protonated decavanadate polyanion. Canadian Mineralogist, 49, 595-604
CNMNC Newsletter No. 7, February 2010, page 29; Mineralogical Magazine, 75, 27-31.; Kampf, A.R., Hughes, J.M., Marty, J., Gunter, M.E., Nash, B. (2011): Rakovanite, Na3{H3[V10O28]}·15H2O, a new member of the pascoite family with a protonated decavanadate polyanion. Canadian Mineralogist, 49, 595-604
  • Utah
    • San Juan Co.
      • La Sal District (Paradox Valley District)
        • La Sal
Gunnar Färber
Mineral and/or Locality  
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