Gazeevite
A valid IMA mineral species
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About Gazeevite
Viktor Gazeev - mineral gazeevite
Formula:
BaCa6(SiO4)2(SO4)2O
Colour:
Colourless
Lustre:
Vitreous
Hardness:
4½
Specific Gravity:
3.39 (Calculated)
Crystal System:
Trigonal
Member of:
Name:
In honor of Dr. Viktor Magalimovich Gazeev (Виктор Магалимович Газеев) (b. 1954), research staff-member of Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry Russian Academy of Sciences (IGEM RAS), Moscow and of Vladikavkaz Scientific Center of the Russian Academy of Sciences, Vladikavkaz, Republic of North Ossetia-Alania, Russia. He is the discoverer of unique xenoliths within the Upper Chegem Caldera (Gazeev et al., 2006), where more than 20 new mineral species were discovered, co-authored by him.
Co-Type Localities:
ⓘ NW slope, Shadil-Khokh volcano, Kel’ volcanic area, Greater Caucasus Mountain Range, South Ossetia, Georgia
ⓘ W slope, Har Parsa (Mt. Parsa), Hatrurim Basin, Tamar Regional Council, Southern District (HaDarom District), Israel
ⓘ Nahal Darga, Bethlehem Governorate, West Bank, Palestine
ⓘ Jebel Harmun (Jabel Harum), Quds Governorate, West Bank, Palestine
ⓘ W slope, Har Parsa (Mt. Parsa), Hatrurim Basin, Tamar Regional Council, Southern District (HaDarom District), Israel
ⓘ Nahal Darga, Bethlehem Governorate, West Bank, Palestine
ⓘ Jebel Harmun (Jabel Harum), Quds Governorate, West Bank, Palestine
One of a few Ba-Ca silicate-sulfate minerals, especially similar to dargaite and somewhat to wenkite. Structurally related to nabimusaite group (e.g., zadovite).
The structure is of modular-layered type, derived from that of hatrurite. More specifically, it has single (broken) antiperovskite layers [WB6](TO4)2 and is of gazeevite-zadovite type.
The structure is of modular-layered type, derived from that of hatrurite. More specifically, it has single (broken) antiperovskite layers [WB6](TO4)2 and is of gazeevite-zadovite type.
Unique Identifiers
Mindat ID:
46709
Long-form identifier:
mindat:1:1:46709:8
GUID
(UUID V4):
(UUID V4):
321fb331-c9a0-4255-8288-d6b0fb9eb6e3
IMA Classification of Gazeevite
Approved
Approval year:
2015
First published:
2017
Type description reference:
Galuskin, E. V., Gfeller, F., Galuskina, I. O., Armbruster, T., Krzątała, A., Vapnik, Y., Kusz, J., Dulski, M., Gardocki, M., Gurbanov, A. G., Dzierżanowski, P. (2017) New minerals with a modular structure derived from hatrurite from the pyrometamorphic rocks. Part III. Gazeevite, BaCa6(SiO4)2(SO4)2O, from Israel and the Palestine Autonomy, South Levant, and from South Ossetia, Greater Caucasus. Mineralogical Magazine, 81 (3) 499-513 doi:10.1180/minmag.2016.080.105
Classification of Gazeevite
9.AH.40
9 : SILICATES (Germanates)
A : Nesosilicates
H : Nesosilicates with CO3, SO4, PO4, etc.
9 : SILICATES (Germanates)
A : Nesosilicates
H : Nesosilicates with CO3, SO4, PO4, etc.
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Gaz | 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 Gazeevite
Vitreous
Transparency:
Transparent
Colour:
Colourless
Streak:
White
Hardness:
4½ on Mohs scale
Hardness:
VHN50=353 - 473 kg/mm2 - Vickers
Comment:
ca. 4.5.
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
(001)
(001)
Parting:
Pronounced
Density:
3.39 g/cm3 (Calculated)
Optical Data of Gazeevite
Type:
Uniaxial (-)
RI values:
nω = 1.640(3) nε = 1.636(2)
Max Birefringence:
δ = 0.004
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Non-pleochroic
Chemistry of Gazeevite
Mindat Formula:
BaCa6(SiO4)2(SO4)2O
Crystallography of Gazeevite
Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
R3m
Setting:
R3m
Cell Parameters:
a = 7.1540(1) Å, c = 25.1242(5) Å
Ratio:
a:c = 1 : 3.512
Unit Cell V:
1,113.58 ų (Calculated from Unit Cell)
Z:
3
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.015 Å | (36) |
| 3.106 Å | (41) |
| 3.074 Å | (47) |
| 2.792 Å | (53) |
| 2.778 Å | (100) |
| 2.637 Å | (25) |
| 2.205 Å | (43) |
| 2.122 Å | (36) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 51 : Pyrometamorphic minerals (see also #54 and #56) | <0.36 |
Geological Setting:
Larnite-bearing pyrometamorphic rocks (Hatrurim Complex)
Type Occurrence of Gazeevite
Co-Type Localities:
ⓘ NW slope, Shadil-Khokh volcano, Kel’ volcanic area, Greater Caucasus Mountain Range, South Ossetia, Georgia
ⓘ W slope, Har Parsa (Mt. Parsa), Hatrurim Basin, Tamar Regional Council, Southern District (HaDarom District), Israel
ⓘ Nahal Darga, Bethlehem Governorate, West Bank, Palestine
ⓘ Jebel Harmun (Jabel Harum), Quds Governorate, West Bank, Palestine
ⓘ W slope, Har Parsa (Mt. Parsa), Hatrurim Basin, Tamar Regional Council, Southern District (HaDarom District), Israel
ⓘ Nahal Darga, Bethlehem Governorate, West Bank, Palestine
ⓘ Jebel Harmun (Jabel Harum), Quds Governorate, West Bank, Palestine
General Appearance of Type Material:
Xenomorphic metacrysts up to 30–50 µm in size, sometimes with hexagonal outline.
Grain aggregates (grains up to 40 µm) filling space between prismatic crystals of nabimusaite-dargaite.
Grain aggregates (grains up to 40 µm) filling space between prismatic crystals of nabimusaite-dargaite.
Place of Conservation of Type Material:
Museum of Natural History, Bern, Switzerland, cat. NMBE 43125.
A.E. Fersman Mineralogical Museum, Moscow, Russia, cat. 4713/1, 4713/2, 4713/3, and 4713/4.
A.E. Fersman Mineralogical Museum, Moscow, Russia, cat. 4713/1, 4713/2, 4713/3, and 4713/4.
Geological Setting of Type Material:
Altered xenolith within rhyodacites; results from HT alterations of the primary clinker assemblage, in the interaction with fluids from volcanic or combustion activity.
Associated Minerals at Type Locality:
Reference:
Galuskin, E.V., Gfeller, F., Galuskina, I.O., Armbruster, T., Krzątała, A., Vapnik, Y., Kusz, J., Dulski, M., Gardocki, M., Gurbanov, A.G., Dzierżanowski, P. (2017): New minerals with a modular structure derived from hatrurite from the pyrometamorphic rocks. Part III. Gazeevite, BaCa6(SiO4)2(SO4)2O, from Israel and the Palestine Autonomy, South Levant, and from South Ossetia, Greater Caucasus. Mineralogical Magazine: 81: 499-513.
Synonyms of Gazeevite
Relationship of Gazeevite to other Species
Member of:
Other Members of this group:
| Aradite | BaCa6[(SiO4)(VO4)](VO4)2F | Trig. 3m : R3m |
| Stracherite | BaCa6(SiO4)2[(PO4)(CO3)]2F | Trig. 3m (3 2/m) : R3m |
| Zadovite | BaCa6[(SiO4)(PO4)](PO4)2F | Trig. 3m : R3m |
Common Associates
Associated Minerals Based on Photo Data:
| 5 photos of Gazeevite associated with Srebrodolskite | Ca2Fe3+2O5 |
| 2 photos of Gazeevite associated with Larnite | Ca2SiO4 |
| 1 photo of Gazeevite associated with Nabimusaite | KCa12(SiO4)4(SO4)2O2F |
| 1 photo of Gazeevite associated with Fluorellestadite | Ca5(SiO4)1.5(SO4)1.5F |
Related Minerals - Strunz-mindat Grouping
| 9.AH. | Fluorbritholite-(Nd) | Ca2Nd3(SiO4)3F |
| 9.AH.05 | Iimoriite-(Y) | Y2[SiO4][CO3] |
| 9.AH.10 | Tundrite-(Ce) | Na2Ce2Ti(SiO4)(CO3)2O2 |
| 9.AH.10 | Tundrite-(Nd) | Na2(Nd,Ce)2Ti(SiO4)(CO3)2O2 |
| 9.AH.15 | Spurrite | Ca5(SiO4)2(CO3) |
| 9.AH.15 | Galuskinite | Ca7(SiO4)3(CO3) |
| 9.AH.20 | Ternesite | Ca5(SiO4)2(SO4) |
| 9.AH.20 | Silicocarnotite | Ca5[(SiO4)(PO4)](PO4) |
| 9.AH.25 | Britholite-(Ce) | (Ce,Ca)5(SiO4)3OH |
| 9.AH.25 | Britholite-(Y) | (Y,Ca)5(SiO4)3OH |
| 9.AH.25 | Chlorellestadite | Ca5(SiO4)1.5(SO4)1.5Cl |
| 9.AH.25 | Fluorbritholite-(Ce) | (Ce,Ca)5(SiO4)3F |
| 9.AH.25 | Fluorellestadite | Ca5(SiO4)1.5(SO4)1.5F |
| 9.AH.25 | Hydroxylellestadite | Ca5(SiO4)1.5(SO4)1.5(OH) |
| 9.AH.25 | Mattheddleite | Pb5(SiO4)1.5(SO4)1.5(Cl,OH) |
| 9.AH.25 | Tritomite-(Ce) | Ce5(SiO4,BO4)3(OH,O) |
| 9.AH.25 | Tritomite-(Y) | Y5(SiO4,BO4)3(O,OH,F) |
| 9.AH.25 | Fluorcalciobritholite | (Ca,REE)5(SiO4,PO4)3F |
| 9.AH.25 | Fluorbritholite-(Y) | (Y,Ca)5(SiO4)3F |
| 9.AH.25 | Britholite-(La) | Ca2(La,Ce,Ca)3(SiO4,PO4)3(OH,F) |
| 9.AH.25 | Calciobritholite | (Ca,Y)5(SiO4,PO4)3(OH) |
| 9.AH.35 | Nabimusaite | KCa12(SiO4)4(SO4)2O2F |
| 9.AH.35 | Dargaite | BaCa12(SiO4)4(SO4)2O3 |
| 9.AH.40 | Zadovite | BaCa6[(SiO4)(PO4)](PO4)2F |
| 9.AH.40 | Stracherite | BaCa6(SiO4)2[(PO4)(CO3)]2F |
| 9.AH.45 | Flamite | Ca8-x(Na,K)x(SiO4)4-x(PO4)x |
| 9.AH.50 | Byzantievite | Ba5(Ca,REE,Y)22(Ti,Nb)18(SiO4)4[(PO4),(SiO4)]4(BO3)9O22[(OH),F]43(H2O)1.5 |
| 9.AH.55 | Greenwoodite | (Ba,V3+O)2V3+9(Fe3+,Fe2+)2Si2O22 |
| 9.AH.60 | Kihlmanite-(Ce) | Ce2TiO2(SiO4)(HCO3)2(H2O) |
| 9.AH.65 | Tsangpoite | Ca5(PO4)2(SiO4) |
| 9.AH.70 | Enalite | (Th,REE,Al) [(PO4),(SiO4),(OH)] |
Fluorescence of Gazeevite
Not fluorescent
Other Information
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 Gazeevite
mindat.org URL:
https://www.mindat.org/min-46709.html
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References for Gazeevite
Reference List:
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2015) New minerals and nomenclature modifications approved in 2015, CNMNC Newsletter 26. Mineralogical Magazine, 79 (4) 941-947 doi:10.1180/minmag.2015.079.4.05
Galuskin, E. V., Gfeller, F., Galuskina, I. O., Armbruster, T., Krzątała, A., Vapnik, Y., Kusz, J., Dulski, M., Gardocki, M., Gurbanov, A. G., Dzierżanowski, P. (2017) New minerals with a modular structure derived from hatrurite from the pyrometamorphic rocks. Part III. Gazeevite, BaCa6(SiO4)2(SO4)2O, from Israel and the Palestine Autonomy, South Levant, and from South Ossetia, Greater Caucasus. Mineralogical Magazine, 81 (3) 499-513 doi:10.1180/minmag.2016.080.105
Localities for Gazeevite
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Georgia (TL) | |
| Mineralogical Magazine +1 other reference |
Israel | |
| Kahlenberg et al. (2019) |
| Mineralogical Magazine +1 other reference |
Palestine (TL) | |
| Mineralogical Magazine +2 other references |
| Mineralogical Magazine +1 other reference |
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Jebel Harmun, Quds Governorate, West Bank, Palestine