Ussingite

Ussingite, etc.

Shkatulka pegmatite, Umbozero mine, Alluaiv Mountain, Lovozersky District, Murmansk Oblast, Russia

Ussingite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Ussingite, etc.

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Ussingite, etc.

Shkatulka pegmatite, Umbozero mine, Alluaiv Mountain, Lovozersky District, Murmansk Oblast, Russia

Ussingite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Ussingite, etc.

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Ussingite, etc.

Shkatulka pegmatite, Umbozero mine, Alluaiv Mountain, Lovozersky District, Murmansk Oblast, Russia

Ussingite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

About UssingiteHide

Niels Viggo Ussing

Formula:

Na₂AlSi₃O₈OH

Colour:

Pale to medium violet, reddish violet, colourless, white, purple

Lustre:

Sub-Vitreous

Hardness:

6 - 7

Specific Gravity:

2.48

Crystal System:

Triclinic

Name:

Named after Niels Viggo Ussing (June 14, 1864-July 23, 1911), Professor of Mineralogy, University of Copenhagen, Denmark.

Type Locality:

ⓘ Kangerluarsuk Fjord, Ilímaussaq complex, Kujalleq, Greenland

The structure is a unique interrupted framework with strong H bonding. It is based on 4-, 6- and 8-membered rings of silicate tetrahedra, somewhat like these in feldspars but, as opposed to the latter, partially depolymerized.

Unique IdentifiersHide

IMA Classification of UssingiteHide

Classification of UssingiteHide

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Physical Properties of UssingiteHide

Optical Data of UssingiteHide

Type:

Biaxial (+)

RI values:

n_α = 1.504 n_β = 1.509 n_γ = 1.545

2V:

Measured: 32° to 39°, Calculated: 42°

Birefringence:

0.041

Max Birefringence:

δ = 0.041

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

Low

Dispersion:

none

Optical Extinction:

Z angle b = 3˚

Chemistry of UssingiteHide

Crystallography of UssingiteHide

Crystal StructureHide

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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)
0000399	Ussingite	Rossi G, Tazzoli V, Ungaretti L (1974) The crystal structure of ussingite American Mineralogist 59 335-340		1974	Lovozero alkali massif, Russia	0	293
0019374	Ussingite	Williams E R, Weller M T (2012) A variable-temperature neutron diffraction study of ussingite; a strong asymmetric hydrogen bond in an aluminosilicate framework Physics and Chemistry of Minerals 39 471-478		2012	Nakalaq, Ilimaussaq complex, Greenland	0	4

CIF Raw Data - click here to closedata_global _chemical_name_mineral 'Ussingite' loop_ _publ_author_name 'Rossi G' 'Tazzoli V' 'Ungaretti L' _journal_name_full 'American Mineralogist' _journal_volume 59 _journal_year 1974 _journal_page_first 335 _journal_page_last 340 _publ_section_title ; The crystal structure of ussingite ; _database_code_amcsd 0000399 _chemical_compound_source 'Lovozero alkali massif, Russia' _chemical_formula_sum 'Al Si3 Na2 H O9' _cell_length_a 7.256 _cell_length_b 7.686 _cell_length_c 8.683 _cell_angle_alpha 90.75 _cell_angle_beta 99.75 _cell_angle_gamma 122.48 _cell_volume 399.436 _exptl_crystal_density_diffrn 2.513 _symmetry_space_group_name_H-M 'P -1' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Al 0.24220 0.04570 0.85510 Si1 0.24630 0.19350 0.36260 Si2 0.32030 0.41470 0.69240 Si3 0.70140 0.10410 0.81290 Na1 0.17590 0.39240 0.05550 Na2 0.82140 0.23420 0.44210 H 0.97900 0.40500 0.76500 O1 0.00210 0.13580 0.27920 O2 0.14190 0.47490 0.65150 O3 0.27670 -0.00210 0.34730 O4 0.30100 0.29700 0.84890 O5 0.44420 0.02240 0.79550 O6 0.42310 0.38180 0.27680 O7 0.79800 0.03440 0.96250 O8 0.85800 0.35570 0.82100 O9 0.29730 0.26040 0.54850 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Al 0.00688 0.00937 0.00898 0.00431 0.00220 0.00210 Si1 0.00658 0.00801 0.00921 0.00355 0.00169 0.00121 Si2 0.00856 0.00847 0.00777 0.00379 0.00250 0.00186 Si3 0.00586 0.01064 0.00889 0.00537 0.00434 0.00284 Na1 0.02672 0.02481 0.01958 0.01665 0.00395 0.00060 Na2 0.02791 0.02109 0.01696 0.01544 0.00549 0.00457 O1 0.01258 0.01546 0.02224 0.00731 0.00272 -0.00029 O2 0.01619 0.02131 0.02211 0.01170 0.00593 0.00809 O3 0.01791 0.01491 0.01129 0.01080 0.00344 0.00207 O4 0.01541 0.01277 0.01137 0.00709 0.00312 0.00165 O5 0.01321 0.01959 0.02036 0.00964 0.00357 0.00212 O6 0.01310 0.01666 0.01492 0.00494 0.00504 0.00467 O7 0.02389 0.03018 0.01395 0.01950 0.00585 0.00789 O8 0.01621 0.01437 0.02431 0.00540 0.00844 0.00000 O9 0.02884 0.01974 0.01048 0.01419 0.00320 0.00179

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Type Occurrence of UssingiteHide

Other Language Names for UssingiteHide

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Related Minerals - Strunz-mindat GroupingHide

Fluorescence of UssingiteHide

Other InformationHide

Internet Links for UssingiteHide

References for UssingiteHide

Localities for UssingiteHide

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.

Canada
Newfoundland and Labrador Labrador Seal Lake alkaline complex (Letitia Lake) ⓘ Mann 1 (Letitia Lake)	GSC locality database +1 other reference
Québec Montérégie La Vallée-du-Richelieu RCM Mont Saint-Hilaire ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH)	166-175. +3 other references
Lajemmerais RCM Varennes & St-Amable Saint-Amable sill ⓘ Demix-Varennes quarry	HORVÁTH (2010)
Greenland
Kujalleq ⓘ Ilímaussaq complex	Petersen (2001) +1 other reference
ⓘ Kangerluarsuk Fjord (TL)	Bøggild (1953)
ⓘ Head of Kangerluarsuk	Sørensen et al. (2001)
ⓘ Gmelinite-Chabazite-Na occurrence	Karup-Møller (1976)
Lilleelv ⓘ Lilleelv pegmatite	Pavel Karthasov photo (photo-203416)
ⓘ Skinnerite occurrence	Karup-Møller et al. (1974) +1 other reference
ⓘ Kuannersuit Plateau (Kvanefjeld)	Sørensen et al. (1970)
ⓘ Kvanefjeld deposit	Makovicky et al. (1980)
ⓘ Kvanefjeld adit	Pekov et al. (2001)
ⓘ Mount Nakkaalaaq	Amer. Mineral. et al. (abs. ref. 1) +2 other references
ⓘ Ilimaussite occurrence	Semenov et al. (1968)
ⓘ Taseq Slope	Karup-Møller et al. (2001) +2 other references
ⓘ Tunulliarfik Fjord	MinerShop.com photo-Photo ID: 100976
ⓘ Igdlunguaq	Jesse Crawford photo & collection +1 other reference
Nunasarnaq ⓘ Karra	Cran Cowan photo
ⓘ Tugtup Agtakôrfia	Andersen et al. (1969)
Russia
Murmansk Oblast Khibiny Massif ⓘ Kukisvumchorr Mt	Pekov et al. (2004)
ⓘ Vuonnemiok River Valley	P Haas collection
ⓘ Lovozero Massif	Mikhailova et al. (2023)
Lovozersky District ⓘ Alluaiv Mountain	Pekov (2000) +2 other references
ⓘ Umbozero mine	Pekov (1998)
ⓘ Shkatulka pegmatite	Lapis +1 other reference
ⓘ Sirenevaya pegmatite	Pavel.M. Kartashov (n.d.)
ⓘ Umbozero North quarry	Pekov (1998)
ⓘ Bolshoi Punkaruaiv Mountain	Pekov et al. (2001)
ⓘ Chinglusuai River Valley	Pekov (1998)
ⓘ Pegmatite No. 65	Pekov (1998)
ⓘ Karnasurt Mountain	Pekov (1998) +1 other reference
Karnasurt mine ⓘ Palitra pegmatite	Pekov et al. (2004) +2 other references
Second Eastern Stream ⓘ Pegmatite No. 60	Pekov (1998)
ⓘ Yubileinaya pegmatite	Kotriy et al. (1996)
ⓘ Kedykverpakhk Mountain	Pekov (1998)
ⓘ Malyi Punkaruaiv Mountain	Pekov (1998) +2 other references
ⓘ Pegmatite No. 71	Ermolaeva et al. (2007) +1 other reference
ⓘ Sengischorr Mountain	Ermolaeva et al. (2007)