Home Page About Mindat The Mindat Manual History of Mindat Copyright Status Who We Are Our Science Mindat Newsletter [Free Download]Contact Us

Donate to Mindat Sponsor a Page Corporate Sponsorship Sponsored Pages

Learning Center What Is a Mineral?The Most Common Minerals on Earth Information for Educators Mindat Articles Mindat Newsletter [Free Download]The Elements The Mineral Quiz

Minerals by Properties Minerals by Chemistry Mineral Visual Explorer Advanced Locality Search Random Mineral Random Locality Search by minID Minerals by Country Alphabetical Mineral Index Alphabetical Locality Search Mineral Association Search List of Countries Localities Near Me Photo Search Search Articles Search Glossary The Rock H. Currier Digital Library More Search Options

The Mindat Manual Add a New Photo Rate Photos Locality Edit Report Coordinate Completion Report Add Glossary Item

Minerals Petrology Fossils Meteorites Geologic Time

Mining Companies Statistics Mineral Museums Clubs & Organizations Mineral Shows & Events Device Settings Time Machine

Read Discussions Identification Request

Photo Search Photo Galleries Search by Colour Photo Colour Explorer New Photos Today New Photos Yesterday Members' Photo Galleries Past Photo of the Day Gallery Photography

Kyzylkumite

A valid IMA mineral species

This page is currently not sponsored. Click here to sponsor this page.

Photos of Kyzylkumite (3)Discuss Kyzylkumite

Search Photos of Kyzylkumite

Edit Kyzylkumite Add Synonym Edit CIF structures Clear Cache

Kyzylkumite

Koscheka U deposit, Auminzatau Mountains, Central Kyzylkum Region, Navoiy, Uzbekistan

Kyzylkumite

Koscheka U deposit, Auminzatau Mountains, Central Kyzylkum Region, Navoiy, Uzbekistan

Kyzylkumite, etc.

Srednyaya Padma mine, Zaonezhie peninsula, Medvezhyegorsky District, Republic of Karelia, Russia

Kyzylkumite

Koscheka U deposit, Auminzatau Mountains, Central Kyzylkum Region, Navoiy, Uzbekistan

Kyzylkumite

Koscheka U deposit, Auminzatau Mountains, Central Kyzylkum Region, Navoiy, Uzbekistan

Kyzylkumite, etc.

Srednyaya Padma mine, Zaonezhie peninsula, Medvezhyegorsky District, Republic of Karelia, Russia

Kyzylkumite

Koscheka U deposit, Auminzatau Mountains, Central Kyzylkum Region, Navoiy, Uzbekistan

Kyzylkumite

Koscheka U deposit, Auminzatau Mountains, Central Kyzylkum Region, Navoiy, Uzbekistan

Hide all sections | Show all sections

About KyzylkumiteHide

Kyzylkum desert, Uzbekistan

Formula:

V³⁺Ti₂O₅(OH)

Colour:

Black

Lustre:

Vitreous, Resinous

Specific Gravity:

3.75

Crystal System:

Monoclinic

Name:

Named after the Kyzylkum region, Uzbekistan that includes the type locality. The Kyzylkum is the 15th largest desert in the world.

Type Locality:

ⓘ Koscheka U deposit, Auminzatau Mountains, Central Kyzylkum Region, Navoiy, Uzbekistan

Compare Unnamed (Ti-V oxide), Unnamed (Vanadium Titanium Oxide 2), Byrudite and Unnamed (Fe-Sn Oxide) (reported to be a member of the "kyzylkumite group".

Unique IdentifiersHide

Mindat ID:

2304

Long-form identifier:

mindat:1:1:2304:3

IMA Classification of KyzylkumiteHide

IMA status:

Approved

IMA Formula:

Ti⁴⁺₂V³⁺O₅(OH)

Approval year:

1980

First published:

1981

Type description reference:

Smyslova, I.G., Komkov, A.I., Pavshukov, V.V., Kuznetsova, N.V. (1981) Kyzylkumite, V2Ti3O9, a new mineral of vanadium and titanium of a group of complex oxides. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 110(5): 607-612.

Classification of KyzylkumiteHide

Strunz-mindat (2026):

4.CB.75

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
B : With medium-sized cations

Dana 8th ed.:

8.4.1.3

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
4 : A₂B₃O₉

Hey's CIM Ref.:

7.12.13

7 : Oxides and Hydroxides
12 : Oxides of V, Nb and Ta

Mineral SymbolsHide

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

Symbol	Source	Reference for Standard
Kyz	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 KyzylkumiteHide

Lustre:

Vitreous, Resinous

Transparency:

Opaque

Colour:

Black

Density:

3.75 g/cm³ (Measured)

Optical Data of KyzylkumiteHide

Anisotropism:

Distinct

Reflectivity:

Wavelength	R₁ (%)	R₂ (%)
440nm	14.7%	15.8%
460nm	14.6%	15.7%
480nm	14.5%	15.7%
500nm	14.5%	15.8%
520nm	14.6%	15.8%
540nm	14.7%	16.0%
560nm	14.8%	16.2%
580nm	14.8%	16.2%
600nm	15.0%	16.3%
620nm	15.1%	16.4%
640nm	15.2%	16.5%
660nm	15.2%	16.5%

Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 16.5%.
R₁ shown in black, R₂ shown in red

Chemistry of KyzylkumiteHide

Mindat Formula:

V³⁺Ti₂O₅(OH)

Element Weights:

Element	% weight
O	39.395 %
Ti	39.287 %
V	20.905 %
H	0.414 %

Calculated from ideal end-member formula.

Elements listed:

H, O, Ti, V - search for minerals with similar chemistry

Crystallography of KyzylkumiteHide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

P2₁/c

Setting:

P2₁/c

Cell Parameters:

a = 8.4787(1) Å, b = 4.5624(1) Å, c = 10.0330(1) Å
β = 93.174(1)°

Ratio:

a:b:c = 1.858 : 1 : 2.199

Unit Cell V:

387.51 Å³ (Calculated from Unit Cell)

Morphology:

Occurs in grains to 0.2 mm.

Crystal StructureHide

Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4

View
CIF File Best | x | y | z | a | b | c

Rotation
Stop | Start

Labels
Console Off | On | Grey | Yellow

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)
0019815	Kyzylkumite	Armbruster T, Lazic B, Reznitsky L Z, Sklyarov E V (2013) Kyzylkumite, Ti2V3+O5(OH): new structure type, modularity and revised formula Mineralogical Magazine 77 33-44		2013	Sludyanka complex, South Baikal, Russia	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Kyzylkumite'
loop_
_publ_author_name
'Armbruster T'
'Lazic B'
'Reznitsky L Z'
'Sklyarov E V'
_journal_name_full 'Mineralogical Magazine'
_journal_volume 77 
_journal_year 2013
_journal_page_first 33
_journal_page_last 44
_publ_section_title
;
 Kyzylkumite, Ti2V3+O5(OH): new structure type, modularity and revised formula
;
_database_code_amcsd 0019815
_chemical_compound_source 'Sludyanka complex, South Baikal, Russia'
_chemical_formula_sum 'Ti2 (V.94 Cr.06) O6 H'
_cell_length_a 8.4787
_cell_length_b 4.5624
_cell_length_c 10.0330
_cell_angle_alpha 90
_cell_angle_beta 93.174
_cell_angle_gamma 90
_cell_volume 387.513
_exptl_crystal_density_diffrn      4.178
_symmetry_space_group_name_H-M 'P 1 21/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+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
_atom_site_U_iso_or_equiv
TiM1   0.08253  -0.00466  -0.12620   1.00000   0.00721
TiM2   0.22693  -0.00921  -0.38492   1.00000   0.00843
VM3   0.39733   0.00554  -0.65117   0.94000   0.00821
CrM3   0.39733   0.00554  -0.65117   0.06000   0.00821
O1   0.07493  -0.22160  -0.29701   1.00000   0.00820
O2   0.25205   0.21630  -0.21405   1.00000   0.00870
O3  -0.08920  -0.21590  -0.04235   1.00000   0.00890
O4  -0.24574   0.28200   0.05147   1.00000   0.00860
O5  -0.41865  -0.21190   0.45759   1.00000   0.00820
O6   0.41440  -0.24630  -0.80111   1.00000   0.00920
H5  -0.42100  -0.42000   0.45200   1.00000   0.05000
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
TiM1 0.00681 0.00821 0.00667 -0.00003 0.00079 -0.00016
TiM2 0.00867 0.00946 0.00726 0.00050 0.00144 0.00006
VM3 0.00677 0.00808 0.00986 0.00139 0.00128 0.00082
CrM3 0.00677 0.00808 0.00986 0.00139 0.00128 0.00082
O1 0.00870 0.00900 0.00720 -0.00240 0.00170 -0.00060
O2 0.00750 0.00950 0.00910 -0.00160 -0.00020 0.00020
O3 0.00880 0.00950 0.00820 -0.00240 0.00070 -0.00010
O4 0.00800 0.00970 0.00820 0.00240 0.00030 0.00150
O5 0.00770 0.00800 0.00880 -0.00090 0.00090 0.00030
O6 0.00660 0.01040 0.01060 -0.00060 0.00110 -0.00220

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.92 Å	(100)
3.70 Å	(80)
1.682 Å	(65)
1.650 Å	(55)
2.60 Å	(50)
1.692 Å	(50)
2.192 Å	(48)

Comments:

Koscheka deposit, Uzbekistan. Data from the type description.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of KyzylkumiteHide

Type Locality:

ⓘ Koscheka U deposit, Auminzatau Mountains, Central Kyzylkum Region, Navoiy, Uzbekistan

General Appearance of Type Material:

Grains, 0.01-0.2 mm long, with a prismatic habit, sometimes with pyramidal terminations and striations along the elongation.

Place of Conservation of Type Material:

Mineralogical Museum, St. Petersburg University, Russia, 17408.
Mining Institute, St. Petersburg, Russia, 1197/1.

Geological Setting of Type Material:

In fine veinlets in quartziferous, uranium-bearing schists.

Associated Minerals at Type Locality:

Chlorite Group

Pyrite

Rutile

Reference: