Sogdianite

Sogdianite, etc.

Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA

Sogdianite, etc.

Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA

Sogdianite, etc.

Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA

Sogdianite, etc.

Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA

Sogdianite, etc.

Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA

Sogdianite, etc.

Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA

Sogdianite, etc.

Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA

Sogdianite, etc.

Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA

About SogdianiteHide

Sogdiana

Formula:

K◻₂Zr₂Li₃[Si₁₂O₃₀]

Colour:

Violet, pale pink

Lustre:

Vitreous

Hardness:

7

Specific Gravity:

2.90

Crystal System:

Hexagonal

Member of:

Osumilite Group

Name:

Named after the ancient region of Sogdia/Sogdiana that at different times included territory located in present-day Uzbekistan, Tajikistan, Kazakhstan, and Kyrgyzstan. It existed from the 6th century BC to the 11th century AD. The type locality is in this region.

Type Locality:

ⓘ Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan

Osumilite Group. The Zr analogue of berezanskite and brannockite. The only mineral with dominant K, Li and Zr combined.

Visit gemdat.org for gemological information about Sogdianite.

Unique IdentifiersHide

IMA Classification of SogdianiteHide

Classification of SogdianiteHide

Mineral SymbolsHide

Physical Properties of SogdianiteHide

Optical Data of SogdianiteHide

Type:

Uniaxial (-)

RI values:

n_ω = 1.608 n_ε = 1.606

Max Birefringence:

δ = 0.002

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

Surface Relief:

Moderate

Chemistry of SogdianiteHide

Crystallography of SogdianiteHide

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)
0002224	Sogdianite	Cooper M A, Hawthorne F C, Grew E S (1999) The crystal chemistry of sogdianite, a milarite-group mineral American Mineralogist 84 764-768		1999	Dara-i-Pioz, Tadjikistan	0	293
0005692	Sogdianite	Sokolova E V, Hawthorne F C, Pautov L A (2000) The crystal chemistry of Li-bearing minerals with the milarite-type structure: The crystal structure of end-member sogdianite The Canadian Mineralogist 38 853-859		2000	Dara-i-Pioz, Tadjikistan	0	293

CIF Raw Data - click here to closedata_global _chemical_name_mineral 'Sogdianite' loop_ _publ_author_name 'Cooper M A' 'Hawthorne F C' 'Grew E S' _journal_name_full 'American Mineralogist' _journal_volume 84 _journal_year 1999 _journal_page_first 764 _journal_page_last 768 _publ_section_title ; The crystal chemistry of sogdianite, a milarite-group mineral Note: U(1,2) for Li2 changed to match symmetry constraints ; _database_code_amcsd 0002224 _chemical_compound_source 'Dara-i-Pioz, Tadjikistan' _chemical_formula_sum '(Zr.76 Fe.73 Ti.38 Al.13) Na1.7 K Si12 Li3 O30' _cell_length_a 10.053 _cell_length_b 10.053 _cell_length_c 14.211 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 1243.789 _exptl_crystal_density_diffrn 2.798 _symmetry_space_group_name_H-M 'P 6/m c c' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-x+y,1/2+z' 'x,x-y,1/2-z' '-x+y,-x,-z' 'x-y,x,z' '-y,-x,1/2+z' 'y,x,1/2-z' 'y,-x+y,-z' '-y,x-y,z' 'x-y,-y,1/2+z' '-x+y,y,1/2-z' 'x,y,-z' '-x,-y,z' 'x,x-y,1/2+z' '-x,-x+y,1/2-z' 'x-y,x,-z' '-x+y,-x,z' 'y,x,1/2+z' '-y,-x,1/2-z' '-y,x-y,-z' 'y,-x+y,z' '-x+y,y,1/2+z' 'x-y,-y,1/2-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy ZrA 0.33333 0.66667 0.25000 0.38000 FeA 0.33333 0.66667 0.25000 0.36500 TiA 0.33333 0.66667 0.25000 0.19000 AlA 0.33333 0.66667 0.25000 0.06500 NaB 0.33333 0.66667 0.01920 0.42500 KC 0.00000 0.00000 0.25000 1.00000 Si1 0.11664 0.35485 0.11056 1.00000 Li2 0.00000 0.50000 0.25000 1.00000 O1 0.13250 0.39710 0.00000 1.00000 O2 0.22110 0.27780 0.13506 1.00000 O3 0.16186 0.50410 0.17134 1.00000 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 ZrA 0.00360 0.00360 0.00470 0.00180 0.00000 0.00000 FeA 0.00360 0.00360 0.00470 0.00180 0.00000 0.00000 TiA 0.00360 0.00360 0.00470 0.00180 0.00000 0.00000 AlA 0.00360 0.00360 0.00470 0.00180 0.00000 0.00000 NaB 0.01790 0.01790 0.03950 0.00900 0.00000 0.00000 KC 0.01870 0.01870 0.02100 0.00930 0.00000 0.00000 Si1 0.00670 0.00750 0.00660 0.00370 0.00000 -0.00070 Li2 0.01330 0.01830 0.01320 0.00915 0.00000 0.00000 O1 0.03020 0.01940 0.00730 0.01200 0.00000 0.00000 O2 0.01450 0.01870 0.01940 0.01310 -0.00150 -0.00130 O3 0.01140 0.00990 0.01260 0.00560 -0.00160 -0.00360

X-Ray Powder DiffractionHide

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Radiation - Copper Kα

Data Set: Dara-i-Pioz, Tadjikistan 1970

Data courtesy of RRUFF project at University of Arizona, used with permission.

Powder Diffraction Data:

d-spacing	Intensity
3.20 Å	(100)
2.90 Å	(100)
4.09 Å	(90)
1.838 Å	(80)
1.326 Å	(80)
1.517 Å	(70)
4.51 Å	(60)

Geological EnvironmentHide

Type Occurrence of SogdianiteHide

Other Language Names for SogdianiteHide

Relationship of Sogdianite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for SogdianiteHide

References for SogdianiteHide

Localities for SogdianiteHide

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.

Japan
Ehime Prefecture Ochi District Iwagi Island ⓘ Mount Kuresaka	Imaoka et al. (2021)
South Africa
Northern Cape John Taolo Gaetsewe District Municipality Joe Morolong Local Municipality ⓘ Wessels Mine	Michael O’Donoghue et al. (2006)
Tajikistan (TL)
Districts of Republican Subordination ⓘ Dara-i-Pioz Massif (TL)	Dusmatov et al. (1968) +3 other references
USA
Washington Okanogan County Golden Horn Batholith ⓘ Washington Pass	Micro Probe Volume VI Number 8 +1 other reference