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Hundholmenite-(Y)

A valid IMA mineral species
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About Hundholmenite-(Y)Hide

Formula:
(Y,REE,Ca,Na)15(Al,Fe3+)(CaxAs3+1-x)(Si,As5+)Si6B3(O,F)48
Colour:
Pale brown
Lustre:
Adamantine, Vitreous
Hardness:
5 - 6
Specific Gravity:
5.206 (Calculated)
Crystal System:
Trigonal
Member of:
Name:
After the type locality of Hundholmen, Tysfjord, Nordland County, Norway.
Isostructural with:

Unique IdentifiersHide

Mindat ID:
29098
Long-form identifier:
mindat:1:1:29098:2
GUID
(UUID V4):
6463d708-670a-4cc2-8fcf-e989144b71b6

IMA Classification of Hundholmenite-(Y)Hide

Classification of Hundholmenite-(Y)Hide

9.AJ.35

9 : SILICATES (Germanates)
A : Nesosilicates
J : Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra, cornersharing with SiO4

Mineral SymbolsHide

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

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

Physical Properties of Hundholmenite-(Y)Hide

Adamantine, Vitreous
Transparency:
Translucent
Colour:
Pale brown
Comment:
Colorless in thin fragments.
Streak:
White
Hardness:
5 - 6 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
None observed
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
5.206 g/cm3 (Calculated)
Comment:
Could not be measured due to inclusions of REE-bearing fluorite.

Optical Data of Hundholmenite-(Y)Hide

Type:
Uniaxial (-)
RI values:
nω = 1.758(5) nε = 1.749(5)
Max Birefringence:
δ = 0.009
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Pleochroism:
Non-pleochroic

Chemistry of Hundholmenite-(Y)Hide

Mindat Formula:
(Y,REE,Ca,Na)15(Al,Fe3+)(CaxAs3+1-x)(Si,As5+)Si6B3(O,F)48

Crystallography of Hundholmenite-(Y)Hide

Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
R3m
Cell Parameters:
a = 10.675(6) Å, c = 27.02(2) Å
Ratio:
a:c = 1 : 2.531
Unit Cell V:
2667 ų
Z:
3
Morphology:
Subhedral equant to tabular crystals up to 1 mm diameter.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0018904Hundholmenite-(Y)Raade G, Johnsen O, Erambert M, Petersen O V (2007) Hundholmenite-(Y) from Norway - a new mineral species in the vicanite group: descriptive data and crystal structure Mineralogical Magazine 71 179-1922007Hundholmen, Tysfjord, Nordland County, Norway0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.38 Å(33)
3.114 Å(43)
3.095 Å(29)
2.972 Å(100)
2.947 Å(76)
2.924 Å(66)
2.681 Å(36)
1.978 Å(37)
Comments:
Hundholmen, Nordland, Norway. The data are from the type description.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites

Type Occurrence of Hundholmenite-(Y)Hide

General Appearance of Type Material:
Anhedral grains or subhedral crystals, equant to tabular in shape, up to 1 mm in size, forming aggregates up to 3 mm across. Embedded in massive REE-bearing fluorite.
Place of Conservation of Type Material:
Natural History Museum, University of Oslo, Norway, number 41590.
Geological Setting of Type Material:
Granitic pegmatite.
Associated Minerals at Type Locality:
Reference:
Raade, G., Johnsen, O., Erambert, M., Petersen, O.V. (2007) Hundholmenite-(Y) from Norway – a new mineral species in the vicanite group: descriptive data and crystal structure. Mineralogical Magazine: 71: 179-192.

Synonyms of Hundholmenite-(Y)Hide

Other Language Names for Hundholmenite-(Y)Hide

Relationship of Hundholmenite-(Y) to other SpeciesHide

Member of:
Other Members of this group:
Arrheniusite-(Ce)CaMg[(Ce7Y3)Ca5](SiO4)4(Si2B3AsO18)(BO3)F11Trig. 3m : R3m
Laptevite-(Ce)Ca6(Fe2+,Mn2+)Y3REE7(SiO4)3(PO4)(B3Si3O18)(BO3)F11Trig. 3m : R3m
Okanoganite-(Y)(Na,Ca)3(Y,Ce)12Si6B2O27F14Trig. 3m : R3m
Proshchenkoite-(Y)Ca(Y,REE,Ca,Na,Mn)15Fe2+(P,Si)Si6B3O34F14Trig. 3m : R3m
Vicanite-(Ce)(Ca,Ce,La,Th)15As5+(As3+0.5,Na0.5)Fe3+Si6B4O40F7Trig. 3m : R3m

Common AssociatesHide

Associated Minerals Based on Photo Data:
18 photos of Hundholmenite-(Y) associated with Yttrofluorite(Ca1-xYx)F2+x where 0.05< x
7 photos of Hundholmenite-(Y) associated with Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
4 photos of Hundholmenite-(Y) associated with Bastnäsite-(Ce)Ce(CO3)F
2 photos of Hundholmenite-(Y) associated with Keiviite-(Y)Y2Si2O7
1 photo of Hundholmenite-(Y) associated with Thalénite-(Y)Y3Si3O10F
1 photo of Hundholmenite-(Y) associated with Lusernaite-(Y)Y4Al(CO3)2(OH)10F · 6H2O
1 photo of Hundholmenite-(Y) associated with Thomasclarkite-(Y)(Na,Ce)(Y,REE)(HCO3)(OH)3 · 4H2O
1 photo of Hundholmenite-(Y) associated with Fluocerite-(Ce)CeF3
1 photo of Hundholmenite-(Y) associated with Feldspar Group
1 photo of Hundholmenite-(Y) associated with Synchysite-(Y)CaY(CO3)2F

Related Minerals - Strunz-mindat GroupingHide

9.AJ.Hingganite-(Nd)Nd2◻Be2Si2O8(OH)2Mon. 2/m : P21/b
9.AJ.Arrheniusite-(Ce)CaMg[(Ce7Y3)Ca5](SiO4)4(Si2B3AsO18)(BO3)F11Trig. 3m : R3m
9.AJ.05Grandidierite(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2Orth. mmm (2/m 2/m 2/m)
9.AJ.05Ominelite(Fe2+,Mg)(Al,Fe3+)3(SiO4)(BO3)O2Orth. mmm (2/m 2/m 2/m)
9.AJ.10DumortieriteAl(Al2O)(Al2O)2(SiO4)3(BO3)Orth. mmm (2/m 2/m 2/m)
9.AJ.10Holtite(Ta0.60.4)Al6BSi3O18(O,OH)2.25Orth. mmm (2/m 2/m 2/m) : Pnma
9.AJ.10MagnesiodumortieriteMg(Al2OH)(Al2O)2(SiO4)3(BO3)Orth. mmm (2/m 2/m 2/m)
9.AJ.10Nioboholtite(Nb0.60.4)Al6BSi3O18Orth. mmm (2/m 2/m 2/m) : Pbcm
9.AJ.10Titanoholtite(Ti0.750.25)Al6BSi3O18Orth. mmm (2/m 2/m 2/m) : Pbcm
9.AJ.15GarrelsiteBa3NaSi2B7O16(OH)4Mon. 2/m : B2/b
9.AJ.20Muromontitenear Be2FeY2Si3O12
9.AJ.20DatoliteCaB(SiO4)(OH)Mon. 2/m : P21/b
9.AJ.20Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10Mon. 2/m
9.AJ.20Gadolinite-(Y)Y2Fe2+Be2Si2O10Mon. 2/m : P21/b
9.AJ.20Hingganite-(Ce)(Ce,REE)2(◻,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
9.AJ.20Hingganite-(Y)(Y,REE,Ca)2(◻,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
9.AJ.20Hingganite-(Yb)(Yb,Y,REE)2◻Be2[SiO4]2(OH)2Mon. 2/m : P21/b
9.AJ.20HomiliteCa2(Fe2+,Mg)B2Si2O10Mon. 2/m : P21/b
9.AJ.20Melanocerite-(Ce)(Ce,Ca)5(SiO4,BO4)3(OH,0)Hex.
9.AJ.20Minasgeraisite-(Y)(Ca2Y2)◻2(Be2B2)[SiO4]4(OH)4Tric. 1 : P1
9.AJ.20Calcybeborosilite-(Y)(Y,Ca)2(◻,Fe2+)(B,Be)2[SiO4]2(OH,O)2Mon.
9.AJ.20Gadolinite-(Nd)Nd2Fe2+Be2O2(SiO4)2Mon. 2/m : P21/b
9.AJ.20Unnamed (OH-analogue of Gadolinite-(Y))(Y,Ca)2(Fe,◻)Be2Si2O8(OH,O)2Mon. 2/m
9.AJ.25Stillwellite-(Ce)(Ce,La,Ca)BSiO5Trig. 3 : P31
9.AJ.30Cappelenite-(Y)Ba(Y,Ce)6Si3B6O24F2Trig. 3 : P3
9.AJ.35Okanoganite-(Y)(Na,Ca)3(Y,Ce)12Si6B2O27F14Trig. 3m : R3m
9.AJ.35Vicanite-(Ce)(Ca,Ce,La,Th)15As5+(As3+0.5,Na0.5)Fe3+Si6B4O40F7Trig. 3m : R3m
9.AJ.35Proshchenkoite-(Y)Ca(Y,REE,Ca,Na,Mn)15Fe2+(P,Si)Si6B3O34F14Trig. 3m : R3m
9.AJ.35Laptevite-(Ce)Ca6(Fe2+,Mn2+)Y3REE7(SiO4)3(PO4)(B3Si3O18)(BO3)F11Trig. 3m : R3m
9.AJ.40JadariteLiNaSiB3O7(OH)Mon. 2/m

Fluorescence of Hundholmenite-(Y)Hide

Not fluorescent in LW or SW.

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.

Internet Links for Hundholmenite-(Y)Hide

References for Hundholmenite-(Y)Hide

Localities for Hundholmenite-(Y)Hide

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.
Italy
 
  • Liguria
    • Savona Province
      • Magliolo
Bracco et al. (2012)
Norway
 
  • Nordland
    • Hamarøy
      • Drag
        • Lapplægeret
Husdal (2008)
Raade (1993) +2 other references
    • Narvik
Raade et al. (2007)
Larsen (1990) +1 other reference
 
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