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Hyalotekite

A valid IMA mineral species - grandfathered

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Photos of Hyalotekite (8)

Hyalotekite Gallery Search Photos of Hyalotekite

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Hyalotekite, etc.

Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden

Hyalotekite

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

Hyalotekite, etc.

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

Hyalotekite, etc.

Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden

Hyalotekite

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

Hyalotekite, etc.

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

Hyalotekite, etc.

Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden

Hyalotekite

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

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About HyalotekiteHide

Formula:

(Ba,Pb,K)₄(Ca,Y)₂(B,Be)₂(Si,B)₂Si₈O₂₈(F,Cl)

also given as Ba₄Ca₂[Si₈B₂(SiB)O₂₈]F (Hawthorne et al., 2018)

Colour:

white to pearly gray

Lustre:

Vitreous, Greasy

Hardness:

5½

Specific Gravity:

3.81 - 3.82

Crystal System:

Triclinic

Member of:

Hyalotekite Group

Name:

From the Greek ύαλος for "glass" and τήκεσθαι,"to melt", in allusion to its easy fusibility.

Type Locality:

ⓘ Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden

Isostructural with:

Kapitsaite-(Y)

The Ba analogue of khvorovite. The Ca₂SiB analogue of kapitsaite-(Y). The crystal structure is very closely related to that of itsiite - its B2◻ (B2-vacancy-) analogue.

Unique IdentifiersHide

Mindat ID:

1961

Long-form identifier:

mindat:1:1:1961:9

GUID
(UUID V4):

031b6e72-c39e-4b6e-9363-69c0b55b0a21

IMA Classification of HyalotekiteHide

IMA status:

Approved, 'Grandfathered' (first described prior to 1959)

IMA Formula:

(Ba,Pb,K)₄(Ca,Y)₂(B,Be)₂(Si,B)₂Si₈O₂₈F

First published:

1877

Type description reference:

Nordenskiõld, A.E. (1877) Nya mineralier från Långban. Geologiska Föreningens i Stockholm Förhandlingar: 3: 376-384.

Classification of HyalotekiteHide

Strunz-mindat (2024):

9.CH.05

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

Dana 8th ed.:

78.6.1.1

78 : Unclassified Silicates
6 :

Hey's CIM Ref.:

17.5.50

17 : Silicates Containing other Anions
5 : Borosilicates

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
Hya	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 HyalotekiteHide

Lustre:

Vitreous, Greasy

Transparency:

Transparent

Colour:

white to pearly gray

Hardness:

5½ on Mohs scale

Tenacity:

Brittle

Cleavage:

Distinct/Good
easy in two directions, indistinct in third direction

Density:

3.81 - 3.82 g/cm³ (Measured) 3.953 g/cm³ (Calculated)

Optical Data of HyalotekiteHide

Type:

Biaxial (+)

RI values:

n_α = 1.963 n_β = 1.963 n_γ = 1.966

2V:

Measured: 57° to 60.5°, Calculated: 55.4° to 62.5°

Max Birefringence:

δ = 0.003

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

Surface Relief:

Very High

Dispersion:

strong r < v

Optical Extinction:

undulatory extinction characteristic of hyalotekite is due to a fine mosaic microstructure.

Chemistry of HyalotekiteHide

Mindat Formula:

(Ba,Pb,K)₄(Ca,Y)₂(B,Be)₂(Si,B)₂Si₈O₂₈(F,Cl)

also given as Ba₄Ca₂[Si₈B₂(SiB)O₂₈]F (Hawthorne et al., 2018)

Elements listed:

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

Common Impurities:

Fe,Mn,Cu,Mg,Sr,Na,Rb

Crystallography of HyalotekiteHide

Crystal System:

Triclinic

Class (H-M):

1 - Pinacoidal

Space Group:

Cell Parameters:

a = 11.310(2) Å, b = 10.955(2) Å, c = 10.317(3) Å
α = 90.43(2)°, β = 90.02°, γ = 90.16°

Ratio:

a:b:c = 1.032 : 1 : 0.942

Unit Cell V:

1,278.25 Å³ (Calculated from Unit Cell)

Morphology:

Coarsely crystalline, massive

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)
0000880	Hyalotekite	Moore P B, Araki T, Ghose S (1982) Hyalotekite, a complex lead borosilicate: Its crystal structure and the lone-pair effect of Pb(II) American Mineralogist 67 1012-1020		1982		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Hyalotekite'
loop_
_publ_author_name
'Moore P B'
'Araki T'
'Ghose S'
_journal_name_full 'American Mineralogist'
_journal_volume 67 
_journal_year 1982
_journal_page_first 1012
_journal_page_last 1020
_publ_section_title
;
 Hyalotekite, a complex lead borosilicate: Its crystal structure and the
 lone-pair effect of Pb(II)
;
_database_code_amcsd 0000880
_chemical_formula_sum 'Pb1.162 Ba2.838 Ca2 Si9.62 Be.38 B2 O28 F'
_cell_length_a 11.310
_cell_length_b 10.955
_cell_length_c 10.317
_cell_angle_alpha 90.43
_cell_angle_beta 90.02
_cell_angle_gamma 90.16
_cell_volume 1278.246
_exptl_crystal_density_diffrn      3.827
_symmetry_space_group_name_H-M 'I -1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Pb1   0.15430   0.17260   0.00430   0.29000
Ba1   0.18780   0.19240   0.01090   0.71000
Pb2   0.84600   0.17190   0.00460   0.29100
Ba2   0.80970   0.19270   0.01050   0.70900
Ca1   0.99960   0.00310   0.22890   1.00000
Si1   0.31720   0.49950   0.00010   0.81000
Be   0.31720   0.49950   0.00010   0.19000
Si2   0.19360   0.52670   0.24820   1.00000
Si3   0.80610   0.52740   0.24800   1.00000
Si4   0.99940   0.32220   0.26260   1.00000
Si5   0.00020   0.72240   0.28250   1.00000
B   0.49990   0.33670   0.03050   1.00000
O1   0.88450   0.63850   0.30680   1.00000
O2   0.88330   0.40430   0.23140   1.00000
O3   0.11590   0.40310   0.23250   1.00000
O4   0.11580   0.63850   0.30620   1.00000
O5   0.23280   0.56850   0.10350   1.00000
O6   0.76660   0.57000   0.10310   1.00000
O7   0.60780   0.40540   0.07910   1.00000
O8   0.39350   0.40440   0.07960   1.00000
O9   0.50200   0.21260   0.08680   1.00000
O10   0.49940   0.66600   0.11330   1.00000
O11   0.00070   0.78360   0.14280   1.00000
O12   0.99880   0.20820   0.16570   1.00000
O13   0.30200   0.50750   0.34240   1.00000
O14   0.69730   0.50830   0.34220   1.00000
F   0.00000   0.00000   0.00000   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
Pb1 0.00390 0.01240 0.00890 -0.00860 -0.00120 -0.00230
Ba1 0.04670 0.02570 0.01230 0.01820 0.00540 0.00320
Pb2 0.01220 0.01150 0.01000 0.01080 0.00060 -0.00170
Ba2 0.04010 0.02320 0.01290 -0.01160 -0.00670 0.00240
Ca1 0.00950 0.00690 0.00940 0.00110 -0.00030 0.00070
Si1 0.01000 0.01560 0.00990 0.00110 -0.00100 -0.00160
Be 0.01000 0.01560 0.00990 0.00110 -0.00100 -0.00160
Si2 0.00850 0.01080 0.01450 0.00090 -0.00020 -0.00040
Si3 0.01000 0.00980 0.01410 0.00170 0.00000 -0.00050
Si4 0.01280 0.00860 0.01240 0.00020 -0.00110 -0.00060
Si5 0.01220 0.00820 0.01040 0.00100 -0.00050 -0.00050
B 0.02030 0.01150 0.01010 0.00200 0.00100 0.00080
O1 0.02590 0.02050 0.01920 -0.00930 -0.00090 -0.00370
O2 0.02830 0.02490 0.03650 0.00980 -0.00150 -0.00810
O3 0.03090 0.02140 0.03630 -0.01140 0.00580 -0.00420
O4 0.02360 0.01930 0.01920 0.01150 -0.00150 -0.00250
O5 0.01870 0.01520 0.01580 0.00430 0.00040 0.00260
O6 0.01970 0.01720 0.01780 -0.00410 -0.00280 0.00080
O7 0.02070 0.01790 0.01290 0.00070 -0.00090 -0.00080
O8 0.02040 0.01920 0.00910 0.00220 0.00020 -0.00090
O9 0.05460 0.01640 0.01430 -0.00170 -0.00120 0.00040
O10 0.01780 0.00710 0.01770 0.00090 -0.00040 -0.00140
O11 0.02260 0.01650 0.01330 -0.00020 -0.00180 0.00160
O12 0.01680 0.01210 0.01090 0.00190 -0.00040 -0.00060
O13 0.00950 0.02040 0.01740 0.00280 0.00040 0.00110
O14 0.01560 0.02020 0.01530 -0.00410 0.00130 0.00110
F 0.02670 0.02660 0.01520 0.00260 0.00220 0.00030

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
7.7 Å	(60)
5.6 Å	(10)
5.44 Å	(15)
5.17 Å	(25)
4.45 Å	(15)
4.32 Å	(50)
3.81 Å	(70)
3.75 Å	(50)
3.53 Å	(80)
3.45 Å	(100)
3.29 Å	(15)
3.12 Å	(40)
2.94 Å	(80)
2.881 Å	(25)
2.814 Å	(10)
2.620 Å	(50)
2.582 Å	(50)
2.541 Å	(15)
2.505 Å	(15)
2.339 Å	(15)
2.297 Å	(65)
2.204 Å	(15)
2.143 Å	(65)
2.031 Å	(30)
2.001 Å	(10)
1.962 Å	(10)
1.842 Å	(30)
1.823 Å	(10)

Comments:

ICDD 19-572.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
High-𝑇 alteration and/or metamorphism
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits
Stage 4b: Highly evolved igneous rocks	>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Geological Setting:

peralkaline pegmatites

Type Occurrence of HyalotekiteHide

Type Locality:

ⓘ Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden

Geological Setting of Type Material:

High temperature manganese skarns

Associated Minerals at Type Locality:

Baryte

Reference:

Nordenskiõld, A.E. (1877) Nya mineralier från Långban. Geologiska Föreningens i Stockholm Förhandlingar: 3: 376-384.

Download:

https://rruff.info/rruff_1.0/uploads/Geologiska_foreningens_i_Stockholm_3_1877_382.pdf

Other Language Names for HyalotekiteHide

German:Hyalotekit

Russian:Гиалотекит

Simplified Chinese:硼硅钡铅矿

Spanish:Hyalotekita

Traditional Chinese:硼矽鋇鉛礦

Relationship of Hyalotekite to other SpeciesHide

Member of:

Hyalotekite Group

Other Members of this group:

Itsiite	Ba₄Ca₂[Si₈B₄O₂₈]◻	Tet. 4 2m : I4 2m
Kapitsaite-(Y)	(Ba,K,Pb)₄(Y,Ca)₂Si₈(B,Si)₄O₂₈F	Tric. 1 : P1
Khvorovite	(Pb,Ba,K)₄Ca₂[Si₈B₂(Si,B)₂O₂₈]F	Tric.

Common AssociatesHide

Associated Minerals Based on Photo Data:

9 photos of Hyalotekite associated with Calcite	CaCO₃
9 photos of Hyalotekite associated with Schefferite	(Ca,Mn)(Mg,Fe,Mn)Si₂O₆
3 photos of Hyalotekite associated with Reedmergnerite	NaBSi₃O₈
1 photo of Hyalotekite associated with Pyrochlore Group	A₂Nb₂(O,OH)₆Z
1 photo of Hyalotekite associated with Kinoite	Ca₂Cu₂(H₂O)₂[Si₃O₁₀]

Related Minerals - Strunz-mindat Grouping Hide

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.05	Khvorovite	(Pb,Ba,K)₄Ca₂[Si₈B₂(Si,B)₂O₂₈]F	Tric.
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 HyalotekiteHide

In UV light:

blue, light brownish orange, or yellowish in SW UV
cathodoluminescence - bright yellow or blue

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 HyalotekiteHide

mindat.org URL:

https://www.mindat.org/min-1961.html
Please feel free to link to this page.

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External Links:

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for HyalotekiteHide

Reference List:

Nordenskiõld, A.E. (1877) Nya mineralier från Långban. Geologiska Föreningens i Stockholm Förhandlingar: 3: 376-384.

Moore, P.B., Araki, T., Ghose, S. (1982) Hyalotekite, a complex lead borosilicate: its crystal structure and the lone-pair effect of Pb(II). American Mineralogist: 67: 1012-1020.

Grew, Edward S., Anovitz, Lawrence M., Grew, Edward S., Anovitz, Lawrence M. - Eds. (1996) Boron - Mineralogy, Petrology and Geochemistry. Reviews in Mineralogy Vol. 33. Mineralogical Society of America

Christy, A.G., Grew, E.S., Mayo, S.C., Yates, M.G., Belakovskiy, D.I. (1998) Hyalotekite, (Ba,Pb,K)4(Ca,Y)2Si8(B,Be)2(Si,B)2O28F, a tectosilicate related to scapolite: a new structure refinement, phase transitions and a short-range ordered 3b superstructure. Mineralogical Magazine: 62: 77-92.

Sokolova, E.V., Ferraris, G., Ivaldi, G., Pautov, L.A., Khvorov, P.V. (2000) Crystal structure of kapitsaite-(Y), a new borosilicate isotypic with hyalotekite - Crystal chemistry of the related isomorphous series. Neues Jahrbuch für Mineralogie, Monatshefte: 2000: 74-84.

Hawthorne, Frank C., Sokolova, Elena, Agakhanov, Atali A., Pautov, Leonid A., Karpenko, Vladimir Yu., Grew, Edward S. (2018) Chemographic exploration of the hyalotekite structure-type. Mineralogical Magazine, 82 (4) 929-937 doi:10.1180/minmag.2017.081.076

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

Localities for HyalotekiteHide

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.


Sweden (TL)
Värmland County Filipstad Långban Ore District ⓘ Långban Mine (TL)	GFF (1877) +1 other reference
Nordmark mining district Jakobsberg ore field ⓘ Jakobsberg Mine	Gatedal (2003)

Tajikistan
Districts of Republican Subordination ⓘ Dara-i-Pioz Massif	Grew et al. (1994) +3 other references

USA
Arizona Mohave County Artillery Mountains Artillery Peak ⓘ Unnamed Base Metals prospect [3]	Williams (1982)

Hyalotekite

About HyalotekiteHide

Unique IdentifiersHide

IMA Classification of HyalotekiteHide

Classification of HyalotekiteHide

Mineral SymbolsHide

Physical Properties of HyalotekiteHide

Optical Data of HyalotekiteHide

Chemistry of HyalotekiteHide

Crystallography of HyalotekiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of HyalotekiteHide

Other Language Names for HyalotekiteHide

Relationship of Hyalotekite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Fluorescence of HyalotekiteHide

Other InformationHide

Internet Links for HyalotekiteHide

References for HyalotekiteHide

Localities for HyalotekiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide