Hundholmenite-(Y)
A valid IMA mineral species
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About Hundholmenite-(Y)
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.
Type Locality:
Isostructural with:
Unique Identifiers
Mindat ID:
29098
Long-form identifier:
mindat:1:1:29098:2
GUID
(UUID V4):
(UUID V4):
6463d708-670a-4cc2-8fcf-e989144b71b6
IMA Classification of Hundholmenite-(Y)
Approved
IMA Formula:
(Y,REE,Ca,Na)15(Al,Fe3+)CaxAs3+1-x(Si,As5+)Si6B3(O,F)48
Approval year:
2006
First published:
2007
Classification of Hundholmenite-(Y)
9.AJ.35
9 : SILICATES (Germanates)
A : Nesosilicates
J : Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra, cornersharing with SiO4
9 : SILICATES (Germanates)
A : Nesosilicates
J : Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra, cornersharing with SiO4
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Hhm-Y | IMA–CNMNC | Warr, 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)
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)
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.
and does not take into account mineral colouration.
Surface Relief:
High
Pleochroism:
Non-pleochroic
Chemistry of Hundholmenite-(Y)
Mindat Formula:
(Y,REE,Ca,Na)15(Al,Fe3+)(CaxAs3+1-x)(Si,As5+)Si6B3(O,F)48
Crystallography of Hundholmenite-(Y)
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 Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0018904 | Hundholmenite-(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 71 179-192 | 2007 | Hundholmen, Tysfjord, Nordland County, Norway | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
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 Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4b: Highly evolved igneous rocks | >3.0 |
34 : Complex granite pegmatites |
Type Occurrence of Hundholmenite-(Y)
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)
Other Language Names for Hundholmenite-(Y)
German:Hundholmenit-(Y)
Relationship of Hundholmenite-(Y) to other Species
Member of:
Other Members of this group:
Arrheniusite-(Ce) | CaMg[(Ce7Y3)Ca5](SiO4)4(Si2B3AsO18)(BO3)F11 | Trig. 3m : R3m |
Laptevite-(Ce) | Ca6(Fe2+,Mn2+)Y3REE7(SiO4)3(PO4)(B3Si3O18)(BO3)F11 | Trig. 3m : R3m |
Okanoganite-(Y) | (Na,Ca)3(Y,Ce)12Si6B2O27F14 | Trig. 3m : R3m |
Proshchenkoite-(Y) | Ca(Y,REE,Ca,Na,Mn)15Fe2+(P,Si)Si6B3O34F14 | Trig. 3m : R3m |
Vicanite-(Ce) | (Ca,Ce,La,Th)15As5+(As3+0.5,Na0.5)Fe3+Si6B4O40F7 | Trig. 3m : R3m |
Common Associates
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 Grouping
9.AJ. | Hingganite-(Nd) | Nd2◻Be2Si2O8(OH)2 |
9.AJ. | Arrheniusite-(Ce) | CaMg[(Ce7Y3)Ca5](SiO4)4(Si2B3AsO18)(BO3)F11 |
9.AJ.05 | Grandidierite | (Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2 |
9.AJ.05 | Ominelite | (Fe2+,Mg)(Al,Fe3+)3(SiO4)(BO3)O2 |
9.AJ.10 | Dumortierite | Al(Al2O)(Al2O)2(SiO4)3(BO3) |
9.AJ.10 | Holtite | (Ta0.6◻0.4)Al6BSi3O18(O,OH)2.25 |
9.AJ.10 | Magnesiodumortierite | Mg(Al2OH)(Al2O)2(SiO4)3(BO3) |
9.AJ.10 | Nioboholtite | (Nb0.6◻0.4)Al6BSi3O18 |
9.AJ.10 | Titanoholtite | (Ti0.75◻0.25)Al6BSi3O18 |
9.AJ.15 | Garrelsite | Ba3NaSi2B7O16(OH)4 |
9.AJ.20 | Muromontite | near Be2FeY2Si3O12 |
9.AJ.20 | Datolite | CaB(SiO4)(OH) |
9.AJ.20 | Gadolinite-(Ce) | (Ce,La,Nd,Y)2Fe2+Be2Si2O10 |
9.AJ.20 | Gadolinite-(Y) | Y2Fe2+Be2Si2O10 |
9.AJ.20 | Hingganite-(Ce) | (Ce,REE)2(◻,Fe2+)Be2[SiO4]2(OH)2 |
9.AJ.20 | Hingganite-(Y) | (Y,REE,Ca)2(◻,Fe2+)Be2[SiO4]2(OH)2 |
9.AJ.20 | Hingganite-(Yb) | (Yb,Y,REE)2◻Be2[SiO4]2(OH)2 |
9.AJ.20 | Homilite | Ca2(Fe2+,Mg)B2Si2O10 |
9.AJ.20 | Melanocerite-(Ce) | (Ce,Ca)5(SiO4,BO4)3(OH,0) |
9.AJ.20 | Minasgeraisite-(Y) | (Ca2Y2)◻2(Be2B2)[SiO4]4(OH)4 |
9.AJ.20 | Calcybeborosilite-(Y) | (Y,Ca)2(◻,Fe2+)(B,Be)2[SiO4]2(OH,O)2 |
9.AJ.20 | Gadolinite-(Nd) | Nd2Fe2+Be2O2(SiO4)2 |
9.AJ.20 | Unnamed (OH-analogue of Gadolinite-(Y)) | (Y,Ca)2(Fe,◻)Be2Si2O8(OH,O)2 |
9.AJ.25 | Stillwellite-(Ce) | (Ce,La,Ca)BSiO5 |
9.AJ.30 | Cappelenite-(Y) | Ba(Y,Ce)6Si3B6O24F2 |
9.AJ.35 | Okanoganite-(Y) | (Na,Ca)3(Y,Ce)12Si6B2O27F14 |
9.AJ.35 | Vicanite-(Ce) | (Ca,Ce,La,Th)15As5+(As3+0.5,Na0.5)Fe3+Si6B4O40F7 |
9.AJ.35 | Proshchenkoite-(Y) | Ca(Y,REE,Ca,Na,Mn)15Fe2+(P,Si)Si6B3O34F14 |
9.AJ.35 | Laptevite-(Ce) | Ca6(Fe2+,Mn2+)Y3REE7(SiO4)3(PO4)(B3Si3O18)(BO3)F11 |
9.AJ.40 | Jadarite | LiNaSiB3O7(OH) |
Fluorescence of Hundholmenite-(Y)
Not fluorescent in LW or SW.
Other Information
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)
mindat.org URL:
https://www.mindat.org/min-29098.html
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References for Hundholmenite-(Y)
Localities for Hundholmenite-(Y)
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
Italy | |
| Bracco et al. (2012) |
Norway | |
| Husdal (2008) |
Raade (1993) +2 other references | |
| Raade et al. (2007) |
Larsen (1990) +1 other reference |
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Hundholmen, Narvik, Nordland, Norway