Named in 2009 by Irina О. Galuskina, Biljana Lazic, Thomas Armbruster, Evgeny V. Galuskin, Viktor M. Gazeev, Aleksander E. Zadov, Nikolai N. Pertsev, Lidia Jeżak, Roman Wrzalik, and Anatoly G. Gurbanov for Kum-Tyube, a mountain plateau where the mineral was found.

Type Locality:

ⓘ Xenolith no. 1, Lakargi Mt., Upper Chegem volcanic caldera (Verkhnechegemskaya caldera), Baksan Valley, Kabardino-Balkaria, Russia

Isostructural with:

Alleghanyite, Chegemite, Chondrodite, Edgrewite, Hydroxylclinohumite, Jerrygibbsite, Leucophoenicite, Manganhumite, Norbergite, Reinhardbraunsite, Ribbeite, Sonolite

The F-dominant analogue of reinhardbraunsite.

Possibly identical with the anthropogenic "kutyukhinite".

Classification of KumtyubeiteHide

IMA status:

Approved

Approval Year:

2008

Nickel-Strunz 10th (pending) ed.:

9.AF.45

9 : SILICATES (Germanates)
A : Nesosilicates
F : Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination

Dana 8th ed.:

52.3.3.4

52 : NESOSILICATES Insular SiO₄ Groups and O,OH,F,H₂O
3 : Insular SiO₄ Groups and O, OH, F, and H₂O with cations in [6] coordination only

Physical Properties of KumtyubeiteHide

Lustre:

Vitreous

Transparency:

Transparent, Translucent

Colour:

Light pink

Streak:

White

Hardness:

5 - 6 on Mohs scale

Hardness:

VHN₅₀=280 - 320 kg/mm² - Vickers

Tenacity:

Brittle

Cleavage:

Distinct/Good
distinct on (001)

Density:

2.866 g/cm³ (Calculated)

Optical Data of KumtyubeiteHide

Type:

Biaxial (-)

RI values:

n_α = 1.594(2) n_β = 1.605(2) n_γ = 1.608(2)

2V:

Measured: 40° to 55°, Calculated: 54.8°

Birefringence:

0.014

Max Birefringence:

δ = 0.014

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

Surface Relief:

Moderate

Optical Extinction:

X^c = 15°, Z = b.

Chemical Properties of KumtyubeiteHide

Formula:

Ca₅(SiO₄)₂F₂

Elements listed:

Ca, F, O, Si - search for minerals with similar chemistry

Crystallography of KumtyubeiteHide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

P2₁/b

Cell Parameters:

a = 11.4340(19) Å, b = 5.0575(9) Å, c = 8.8657(16) Å
β = 108.860(12)°

Ratio:

a:b:c = 2.261 : 1 : 1.753

Unit Cell V:

485.16 Å³ (Calculated from Unit Cell)

Morphology:

Granular patches in skarn

Twinning:

polysynthetic, twins on (001)

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
8.3830 Å	(1)
5.4202 Å	(30)
4.5824 Å	(1)
4.3297 Å	(3)
4.1915 Å	(3)
4.00006 Å	(4)
3.8031 Å	(13)
3.3273 Å	(21
3.2269 Å	(4)
3.1374 Å	(3)
3.0344 Å	(37)
2.9399 Å	(17)
2.9018 Å	(16)
2.8932 Å	(13)
2.8635 Å	(3)
2.7943 Å	(2)
2.7737 Å	(25)
2.7101 Å	(12)
2.5713 Å	(20)
2.5452 Å	(12)
2.5282 Å	(2)
2.5112 Å	(17)
2.4917 Å	(10)
2.4621 Å	(2)
2.3640 Å	(2)
2.3168 Å	(2)
2.2530 Å	(2)
2.1369 Å	(3)
2.0511 Å	(2)
2.0126 Å	(4)
1.9926 Å	(3)
1.9360 Å	(2)
1.9128 Å	(2)
1.9040 Å	(100)
1.8952 Å	(37)
1.8748 Å	(2)
1.8209 Å	(4)
1.8145 Å	(2)
1.8063 Å	(14)
1.8027 Å	(23)
1.7267 Å	(6)
1.7216 Å	(6)
1.6915 Å	(4)
1.6766 Å	(9)
1.6655 Å	(1)
1.6587 Å	(28)
1.6492 Å	(3)
1.6183 Å	(2)
1.5748 Å	(2)
1.5551 Å	(6)
1.5403 Å	(8)
1.5274 Å	(2)
1.5221 Å	(1)
1.5026 Å	(2)
1.4925 Å	(4)

Comments:

American Mineralogist, 94, 1361–1370.

Type Occurrence of KumtyubeiteHide

Type Locality:

ⓘ Xenolith no. 1, Lakargi Mt., Upper Chegem volcanic caldera (Verkhnechegemskaya caldera), Baksan Valley, Kabardino-Balkaria, Russia

General Appearance of Type Material:

Pale pink grains to 0.25 mm in 1 cm granular aggregates

Place of Conservation of Type Material:

Museum of Natural History, Bern, specimen number NMBE 39572 and in the collection of the Fersman Mineralogical Museum, Moscow, specimen number 3732/1.

Geological Setting of Type Material:

In contact-metasomatic rocks formed by interaction of carbonate xenoliths with subvolcanic magma and volcanites. The mineral occurs in spurrite-rondorfite-ellestadite zones of skarn

Associated Minerals at Type Locality:

Synonyms of KumtyubeiteHide

IMA2008-045

Relationship of Kumtyubeite to other SpeciesHide

Member of:

Chegemite series Group > Humite Group

Other Members of this group:

Chegemite	Ca₇(SiO₄)₃(OH)₂	Orth. mmm (2/m 2/m 2/m)
Edgrewite	Ca₉(SiO₄)₄F₂	Mon. 2/m : P2₁/b
Fluorchegemite	Ca₇(SiO₄)₃F₂	Orth. mmm (2/m 2/m 2/m)
Reinhardbraunsite	Ca₅(SiO₄)₂(OH,F)₂	Mon. 2/m : P2₁/b

Related Minerals - Nickel-Strunz Grouping Hide

9.AF.05	Sillimanite	Al₂(SiO₄)O	Orth. mmm (2/m 2/m 2/m)
9.AF.10	Andalusite	Al₂(SiO₄)O	Orth. mmm (2/m 2/m 2/m) : Pnnm
9.AF.10	Kanonaite	Mn³⁺Al(SiO₄)O	Orth. mmm (2/m 2/m 2/m) : Pnnm
9.AF.15	Kyanite	Al₂(SiO₄)O	Tric. 1 : P1
9.AF.20	Mullite	Al_4+2xSi_2-2xO_10-x	Orth. mmm (2/m 2/m 2/m) : Pbam
9.AF.20	Krieselite	(Al,Ga)₂(GeO₄)(OH)₂	Orth. mmm (2/m 2/m 2/m) : Pnma
9.AF.23	Boromullite	Al₉BSi₂O₁₉	Orth. mm2 : Cmc2₁
9.AF.25	Yoderite	Mg(Al,Fe³⁺)₃(SiO₄)₂O(OH)	Mon. 2/m : P2₁/m
9.AF.30	Magnesiostaurolite	Mg(Mg,Li)₃(Al,Mg)₁₈Si₈O₄₄(OH)₄	Mon. 2/m : B2/m
9.AF.30	Staurolite	Fe²⁺₂Al₉Si₄O₂₃(OH)	Mon. 2/m : B2/m
9.AF.30	Zincostaurolite	Zn₂Al₉Si₄O₂₃(OH)	Mon. 2/m : B2/m
9.AF.35	Topaz	Al₂(SiO₄)(F,OH)₂	Orth. mmm (2/m 2/m 2/m)
9.AF.40	Norbergite	Mg₃(SiO₄)(F,OH)₂	Orth. mmm (2/m 2/m 2/m)
9.AF.45	Alleghanyite	Mn²⁺₅(SiO₄)₂(OH)₂	Mon. 2/m : P2₁/b
9.AF.45	Chondrodite	(Mg,Fe²⁺)₅(SiO₄)₂(F,OH)₂	Mon. 2/m : P2₁/b
9.AF.45	Reinhardbraunsite	Ca₅(SiO₄)₂(OH,F)₂	Mon. 2/m : P2₁/b
9.AF.45	Hydroxylchondrodite	Mg₅(SiO₄)₂(OH)₂	Mon. 2/m : P2₁/b
9.AF.50	Humite	(Mg,Fe²⁺)₇(SiO₄)₃(F,OH)₂	Orth. mmm (2/m 2/m 2/m) : Pnma
9.AF.50	Manganhumite	(Mn²⁺,Mg)₇(SiO₄)₃(OH)₂	Orth.
9.AF.50	Unnamed (Ca-analogue of Humite)	Ca₇(SiO₄)₄F₂	Orth. mmm (2/m 2/m 2/m)
9.AF.55	Clinohumite	Mg₉(SiO₄)₄F₂	Mon. 2/m : P2₁/b
9.AF.55	Sonolite	Mn²⁺₉(SiO₄)₄(OH)₂	Mon.
9.AF.55	Hydroxylclinohumite	Mg₉(SiO₄)₄(OH)₂	Mon. 2/m
9.AF.60	Leucophoenicite	Mn²⁺₇(SiO₄)₃(OH)₂	Mon. 2/m : P2₁/b
9.AF.65	Ribbeite	Mn²⁺₅(SiO₄)₂(OH)₂	Orth.
9.AF.70	Jerrygibbsite	Mn²⁺₉(SiO₄)₄(OH)₂	Orth. mmm (2/m 2/m 2/m) : Pbcn
9.AF.75	Franciscanite	Mn²⁺₆(V⁵⁺,☐)₂(SiO₄)₂(O,OH)₆	Hex.
9.AF.75	Örebroite	Mn²⁺₃(Sb⁵⁺,Fe³⁺)(SiO₄)(O,OH)₃	Hex.
9.AF.75	Welinite	Mn²⁺₆(W⁶⁺,Mg)₂(SiO₄)₂(O,OH)₆	Trig. 3 : P3
9.AF.80	Ellenbergerite	Mg₆(Mg,Ti,Zr,◻)₂(Al,Mg)₆Si₈O₂₈(OH)₁₀	Hex.
9.AF.85	Chloritoid	(Fe²⁺,Mg,Mn²⁺)Al₂(SiO₄)O(OH)₂	Mon. 2/m : B2/b
9.AF.85	Magnesiochloritoid	MgAl₂(SiO₄)O(OH)₂	Mon. 2/m : B2/b
9.AF.85	Ottrélite	(Mn²⁺,Fe²⁺,Mg)Al₂(SiO₄)O(OH)₂	Mon.
9.AF.90	Poldervaartite	CaCa[SiO₃(OH)](OH)	Orth. mmm (2/m 2/m 2/m) : Pbca
9.AF.90	Olmiite	CaMn²⁺[SiO₃(OH)](OH)	Orth. mmm (2/m 2/m 2/m) : Pbca

Related Minerals - Dana Grouping (8th Ed.)Hide

52.3.3.1	Chloritoid	(Fe²⁺,Mg,Mn²⁺)Al₂(SiO₄)O(OH)₂	Mon. 2/m : B2/b
52.3.3.2	Magnesiochloritoid	MgAl₂(SiO₄)O(OH)₂	Mon. 2/m : B2/b
52.3.3.3	Ottrélite	(Mn²⁺,Fe²⁺,Mg)Al₂(SiO₄)O(OH)₂	Mon.
52.3.3.4	Carboirite	FeAl₂(GeO₄)O(OH)₂	Tric.
52.3.3.6	Hydroxylchondrodite	Mg₅(SiO₄)₂(OH)₂	Mon. 2/m : P2₁/b

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.

References for KumtyubeiteHide

Reference List:

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)

Galuskina, Irina О.; Lazic, Biljana; Armbruster, Thomas; Galuskin, Evgeny V.; Gazeev, Viktor M.; Zadov, Aleksander E.; Pertsev, Nikolai N.; Jeżak, Lidia; Wrzalik, Roman; Gurbanov, Anatoly G. (2009) Kumtyubeite Ca5(SiO4)2F2 — A new calcium mineral of the humite group from Northern Caucasus, Kabardino-Balkaria, Russia. American Mineralogist: 94: 1361–1370.

Internet Links for KumtyubeiteHide

mindat.org URL:

https://www.mindat.org/min-39209.html
Please feel free to link to this page.

Search Engines:

Look for Kumtyubeite on Google

Look for Kumtyubeite images on Google

External Links:

Look for Kumtyubeite on Webmineral

Look for Kumtyubeite on Wikipedia

Look for Kumtyubeite 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:

Quality Mineral Specimens For Sale ~ Cal Neva Mineral Company

The Arkenstone - Fine Minerals

AUCTION Closing! Don't Miss Out

Heritage 1971 - Chinese Minerals

Rare and Unusual minerals at Mineralogical Research Company

High-end worldwide specimens & outstanding customer service

Buy from David K Joyce minerals

Blue Gems Australian & International

Fine Minerals from Weinrich Minerals, Inc.

Wilensky Exquisite Minerals

Buy rare minerals from Excalibur Minerals

Search for Kumtyubeite on Well-Arranged Molecules

Lapis Mineral Magazin

Localities for KumtyubeiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.


Czech Republic
South Moravian Region Brno-Country District Oslavany ⓘ Rosice-Oslavany coalfield	Hršelová, P., Cempírek, J., Houzar, S., Sejkora, J. (2013): S,F,Cl-rich mineral assemblages from burned spoil heaps in the Rosice-Oslavany coalfield, Czech Republic. Can. Mineral.: 51(1): 171-188

Germany
Rhineland-Palatinate Mayen-Koblenz Mayen Ettringen ⓘ Bellerberg volcano	Blaß, G. and Kruijen, F. (2015) Neuigkeiten aus der Vulkaneifel (II/2015). Mineralien-Welt, 26(5), 80-90.

Jordan
Amman ⓘ Jordan Areva Resources	Fleurance, S., Cuney, M., Malartre, F., & Reyx, J. (2013). Origin of the extreme polymetallic enrichment (Cd, Cr, Mo, Ni, U, V, Zn) of the Late Cretaceous–Early Tertiary Belqa Group, central Jordan. Palaeogeography, Palaeoclimatology, Palaeoecology, 369, 201-219.

Russia (TL)
Kabardino-Balkaria Baksan Valley Upper Chegem volcanic caldera (Verkhnechegemskaya caldera) Lakargi Mt. ⓘ Xenolith no. 1 (TL)	Galuskina, I. O., Galuskin, E. V., Kusz, J., Dzierżanowski, P., Prusik, K., Gazeev, V. M., ... & Dubrovinsky, L. (2013). Dzhuluite, Ca3SbSnFe3+ 3O12, a new bitikleite-group garnet from the Upper Chegem Caldera, Northern Caucasus, Kabardino-Balkaria, Russia. European Journal of Mineralogy, 25(2), 231-239

South Ossetia
Greater Caucasus Mountain Range Kel’ volcanic area Shadil-Khokh volcano ⓘ NW slope	Galuskina, I.O., Krüger, B., Galuskin, E.V. ,Armbruster, T., Gazeev, V.M., Włodyka, R., Dulski, M. & Dzierżanowski, P. (2015): Fluorchegemite, Ca7(SiO4)3F2, a new mineral from the edgrewitebearing endoskarn zone of an altered xenolith in ignimbrites from Upper Chegem Caldera, Northern Caucasus, Kabardina-balkaria, Russia; Occurrence, crystal structure, and new data on the mineral assemblages. Canadian Mineralogist. 53, 325-344.

Ukraine
Donetsk Oblast Donetsk Kalinin coal mine ⓘ Burned coal dumps	Шарыгин, В. В. (2015). Минералогия метакарбонатной породы из горелого террикона угольной шахты им. Калинина, г. Донецк. Минералогия техногенеза–2015, Миасс, Имин УрО РАН, 13-40. (Mineralogy of a Metacarbonate Rock from a Burned Dump of the Kalinin Coal Mine, Donetsk)

Quick NavTop About Kumtyubeite Classification Physical Properties Optical Data Chemical Properties Crystallography X-Ray Powder Diffraction Type Occurrence Synonyms Relationships Nickel-Strunz Dana Other Information References Internet Links Localities Locality List

Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2020, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: January 28, 2020 11:21:07 Page generated: November 14, 2019 12:32:51

Go to top of page

Wadalite	Srebrodolskite	Spurrite	Rustumite	Rondorfite
Reinhardbraunsite	Perovskite	Periclase	Magnesioferrite	Larnite
Lakargiite	Hydrocalumite	Hydrocalumite	Hillebrandite	Ettringite Group
Ellestadite	Cuspidine	Calcite	Bultfonteinite	Bultfonteinite
Brucite	Afwillite

Kumtyubeite

About KumtyubeiteHide