Named after Pavel Vitalievich Khvorov (Павел Витальевич Хворов) (b. 1965), a Russian mineralogist at the Institute of Mineralogy, Ural Branch of the Russian Academy of Sciences, to honour his contribution to the study of the mineralogy of the Darai-Pioz massif.

Type Locality:

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

The Pb2+ analogue of hyalotekite and a Pb2+-, Ca-analogue of kapitsaite-(Y).

Hide all sections | Show all sections

Unique IdentifiersHide

Mindat ID:

46432

Long-form identifier:

mindat:1:1:46432:9

GUID
(UUID V4):

b2adc1eb-8510-4010-9190-3fd7332914d6

IMA Classification of KhvoroviteHide

IMA status:

Approved

IMA Formula:

Pb₄Ca₂[Si₈B₂(SiB)O₂₈]F

Approval year:

2014

Classification of KhvoroviteHide

Strunz-mindat (2024):

9.CH.05

9 : SILICATES (Germanates)
C : Cyclosilicates
H : [Si₄O₁₂]₈- 4-membered double rings

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
Khv	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 KhvoroviteHide

Lustre:

Vitreous

Transparency:

Transparent

Colour:

Colourless, rarely white

Streak:

White

Hardness:

5 - 5½ on Mohs scale

Tenacity:

Brittle

Cleavage:

None Observed

Parting:

Not observed.

Fracture:

Irregular/Uneven

Density:

3.96 g/cm³ (Measured) 3.968 g/cm³ (Calculated)

Optical Data of KhvoroviteHide

Type:

Biaxial (+)

RI values:

n_α = 1.659(3) n_β = 1.671(2) n_γ = 1.676(3)

2V:

Measured: 64°

Max Birefringence:

δ = 0.017

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

Surface Relief:

High

Dispersion:

Medium dispersion: r < v

Chemistry of KhvoroviteHide

Mindat Formula:

(Pb,Ba,K)₄Ca₂[Si₈B₂(Si,B)₂O₂₈]F

Elements listed:

B, Ba, Ca, F, K, O, Pb, Si - search for minerals with similar chemistry

Crystallography of KhvoroviteHide

Crystal System:

Triclinic

Cell Parameters:

a = 11.354(2) Å, b = 10.960(2) Å, c = 10.271(2) Å
α = 90.32(3)°, β = 90.00(3)°, γ = 90.00(3)°

Ratio:

a:b:c = 1.036 : 1 : 0.937

Unit Cell V:

1278 Å³

Morphology:

As irregular grains, rarely with square or rectangular sections up to 150 μm, and grain aggregates up to 0.5 mm.

Comment:

I1¯

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
7.86 Å	(100)
7.65 Å	(90)
7.55 Å	(90)
5.15 Å	(80)
4.31 Å	(80)
3.81 Å	(90)
3.55 Å	(90)
2.934 Å	(90)

Comments:

From Type Description.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 4b: Highly evolved igneous rocks	>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of KhvoroviteHide

Type Locality:

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

General Appearance of Type Material:

Found in a in a pectolite aggregate in silexites (quartz-rich rocks)

Place of Conservation of Type Material:

Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Science, Moscow, Russia, registration number 4573/1

Geological Setting of Type Material:

Alkaline massif

Associated Minerals at Type Locality:

Zeravshanite	Turkestanite	Stillwellite-(Ce)	Sokolovaite	Senkevichite
Reedmergnerite	Quartz	Pyrochlore Group	Polylithionite	Pekovite
Pectolite	Orlovite	Mendeleevite-(Ce)	Leucosphenite	Fluorite
Calcite	Baratovite	Alamosite	Aegirine

Synonyms of KhvoroviteHide

IMA2014-050

Relationship of Khvorovite to other SpeciesHide

Member of:

Hyalotekite Group

Other Members of this group:

Hyalotekite	(Ba,Pb,K)₄(Ca,Y)₂(B,Be)₂(Si,B)₂Si₈O₂₈(F,Cl)	Tric. 1 : P1
Itsiite	Ba₄Ca₂[Si₈B₄O₂₈]◻	Tet. 4 2m : I4 2m
Kapitsaite-(Y)	(Ba,K,Pb)₄(Y,Ca)₂Si₈(B,Si)₄O₂₈F	Tric. 1 : P1

Related Minerals - Strunz-mindat Grouping Hide

9.CH.05	Hyalotekite	(Ba,Pb,K)₄(Ca,Y)₂(B,Be)₂(Si,B)₂Si₈O₂₈(F,Cl)	Tric. 1 : P1
9.CH.05	Kapitsaite-(Y)	(Ba,K,Pb)₄(Y,Ca)₂Si₈(B,Si)₄O₂₈F	Tric. 1 : P1
9.CH.05	Itsiite	Ba₄Ca₂[Si₈B₄O₂₈]◻	Tet. 4 2m : I4 2m
9.CH.10	Iraqite-(La)	KCa₂(La,Ce,Th)Si₈O₂₀	Tet. 4/mmm (4/m 2/m 2/m) : P4/mcc
9.CH.10	Steacyite	K_0.3(Na,Ca)₂ThSi₈O₂₀	Tet. 4/mmm (4/m 2/m 2/m) : P4/mcc
9.CH.10	Turkestanite	(K,◻)(Ca,Na)₂ThSi₈O₂₀ · nH₂O	Tet. 4/mmm (4/m 2/m 2/m) : P4/mcc
9.CH.10	Arapovite	(K_1-x◻_x)(Ca,Na)₂U⁴⁺Si₈O₂₀ (x ~ 0.5)	Tet. 4/mmm (4/m 2/m 2/m) : P4/mcc

Fluorescence of KhvoroviteHide

In UV light:

Does not fluoresce under ultraviolet light.

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 KhvoroviteHide

mindat.org URL:

https://www.mindat.org/min-46432.html
Please feel free to link to this page.

Search Engines:

Look for Khvorovite on Google

Look for Khvorovite images on Google

Look for Khvorovite on Bing

Look for Khvorovite images on Bing

Look for Khvorovite on DuckDuckGo

Look for Khvorovite images on DuckDuckGo

Look for Khvorovite in the Rock H. Currier Digital Library

External Links:

Look for Khvorovite on Webmineral

Look for Khvorovite on Wikipedia

Look for Khvorovite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

Mineral Dealers:

Buy rare minerals from Excalibur Minerals

Wilensky Exquisite Minerals

Fine Minerals from Weinrich Minerals, Inc.

Buy from David K Joyce minerals

Buy from McDougall Minerals

The Arkenstone - Fine Minerals

Blue Gems Australian & International

High-end worldwide specimens & outstanding customer service

References for KhvoroviteHide

Reference List:

Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2014) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC), CNMNC Newsletter No. 22. Mineralogical Magazine, 78 (5) 1241-1248 doi:10.1180/minmag.2014.078.5.10

Pautov, Leonid A., Agakhanov, Atali A., Sokolova, Elena, Hawthorne, Frank C., Karpenko, Vladimir Y., Siidra, Oleg I., Garanin, Viktor K., Abdu, Yassir A. (2015) Khvorovite, Pb²⁺₄Ca₂[Si₈B₂(SiB)O₂₈]F, a new hyalotekite-group mineral from the Darai-Pioz alkaline massif, Tajikistan: Description and crystal structure. Mineralogical Magazine, 79 (4) 949-963 doi:10.1180/minmag.2015.079.4.06

(2023) Khvorovite. Handbook of Mineralogy. Mineralogical Society of America

Localities for KhvoroviteHide

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.

Tajikistan (TL)

Districts of Republican Subordination

ⓘ Dara-i-Pioz Massif (TL)

Pautov et al. (2015) +1 other reference

Khvorovite