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Lake Barchi area, Aiyrtau, North Kazakhstan Region, Kazakhstani
Regional Level Types
Lake Barchi areaOccurrence
AiyrtauDistrict
North Kazakhstan RegionRegion
KazakhstanCountry

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Latitude & Longitude (WGS84): 53° 15' North , 68° 25' East
Latitude & Longitude (decimal): 53.25000,68.41667
GeoHash:G#: v92wuvg7x
Locality type:Occurrence
Köppen climate type:Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Volodarskoye2,074 (2016)21.3km
Birlestik1,354 (2015)37.4km
Other/historical names associated with this locality:Barchinskii; Barchinskiy; Barchinskoye; Barchi-Kol


At this occurrence, diamonds are also found in carbonatitic rocks. The latter are associated with pyroxenites, alkaline gabbroids, pulaskite, and nepheline syenite.
Diamond ore bodies, hosted in metasedimentary rocks intercalated with metavolcanic rocks within an ultra-high pressure (UHP) metamorphic terrane (Kokshetau massif), formed during a Palaeozoic continental collision.

The ore bodies consist of feldspathic gneisses and quartz-rich rocks intercalated with calc-silicate rocks, marbles, and layered garnet pyroxenites with enclosed lenses of eclogite. The diamonds are typically 1-80 µm in diameter and occur as inclusions in virtually all rock-forming minerals, even though some of these minerals are unstable under the conditions of diamond formation. Diamonds are also preserved in chlorite-sericite aggregates that replace garnet, and it is found in sericite pseudomorphs after plagioclase in garnet-biotite and garnet-two-mica gneisses. They show no connection with the eclogites. Instead, the diamond ore bodies occur within ductile and semi-ductile shear zones that cut the eclogite facies rocks at acute angles.

Located about 17 km west of Lake Kumdykol.

Regions containing this locality

Eurasian PlateTectonic Plate
Soviet Union (1922-1991)Country (Former)

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


19 valid minerals.

Detailed Mineral List:

Aegirine
Formula: NaFe3+Si2O6
Andalusite
Formula: Al2(SiO4)O
'Apatite'
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Baddeleyite
Formula: ZrO2
'Biotite'
Calcite
Formula: CaCO3
'Clinopyroxene Subgroup'
Diamond
Formula: C
Diopside
Formula: CaMgSi2O6
Forsterite
Formula: Mg2SiO4
'Garnet Group'
Formula: X3Z2(SiO4)3
'K Feldspar'
Kyanite
Formula: Al2(SiO4)O
Magnetite
Formula: Fe2+Fe3+2O4
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Nepheline
Formula: Na3K(Al4Si4O16)
Perovskite
Formula: CaTiO3
'Phengite'
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Quartz
Formula: SiO2
Sillimanite
Formula: Al2(SiO4)O
Spinel
Formula: MgAl2O4
Zircon
Formula: Zr(SiO4)
Zoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Diamond1.CB.10aC
Group 4 - Oxides and Hydroxides
Baddeleyite4.DE.35ZrO2
Magnetite4.BB.05Fe2+Fe3+2O4
Perovskite4.CC.30CaTiO3
Quartz4.DA.05SiO2
Spinel4.BB.05MgAl2O4
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 9 - Silicates
Aegirine9.DA.25NaFe3+Si2O6
Andalusite9.AF.10Al2(SiO4)O
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Diopside9.DA.15CaMgSi2O6
Forsterite9.AC.05Mg2SiO4
Kyanite9.AF.15Al2(SiO4)O
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Nepheline9.FA.05Na3K(Al4Si4O16)
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Sillimanite9.AF.05Al2(SiO4)O
Zircon9.AD.30Zr(SiO4)
Zoisite9.BG.10{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Biotite'-
'Clinopyroxene Subgroup'-
'Garnet Group'-X3Z2(SiO4)3
'K Feldspar'-
'Phengite'-KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Diamond1.3.6.1C
Group 4 - SIMPLE OXIDES
A2X3
Perovskite4.3.3.1CaTiO3
AX2
Baddeleyite4.4.14.1ZrO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Spinel7.2.1.1MgAl2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
Andalusite52.2.2b.1Al2(SiO4)O
Kyanite52.2.2c.1Al2(SiO4)O
Sillimanite52.2.2a.1Al2(SiO4)O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Zoisite58.2.1b.1{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Aegirine65.1.3c.2NaFe3+Si2O6
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Diopside65.1.3a.1CaMgSi2O6
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework Feldspathoids and related species
Nepheline76.2.1.2Na3K(Al4Si4O16)
Unclassified Minerals, Mixtures, etc.
'Apatite'-
'Biotite'-
'Clinopyroxene Subgroup'-
'Garnet Group'-X3Z2(SiO4)3
'K Feldspar'-
'Phengite'-KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2

List of minerals for each chemical element

HHydrogen
H PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
H Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
H PhlogopiteKMg3(AlSi3O10)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
C CalciteCaCO3
C DiamondC
OOxygen
O QuartzSiO2
O PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
O Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
O AegirineNaFe3+Si2O6
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O BaddeleyiteZrO2
O CalciteCaCO3
O DiopsideCaMgSi2O6
O ForsteriteMg2SiO4
O MagnetiteFe2+Fe23+O4
O SpinelMgAl2O4
O ZirconZr(SiO4)
O PerovskiteCaTiO3
O PhlogopiteKMg3(AlSi3O10)(OH)2
O Garnet GroupX3Z2(SiO4)3
O AndalusiteAl2(SiO4)O
O KyaniteAl2(SiO4)O
O SillimaniteAl2(SiO4)O
O MuscoviteKAl2(AlSi3O10)(OH)2
O NephelineNa3K(Al4Si4O16)
NaSodium
Na AegirineNaFe3+Si2O6
Na NephelineNa3K(Al4Si4O16)
MgMagnesium
Mg PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg DiopsideCaMgSi2O6
Mg ForsteriteMg2SiO4
Mg SpinelMgAl2O4
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
AlAluminium
Al PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Al Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Al SpinelMgAl2O4
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al AndalusiteAl2(SiO4)O
Al KyaniteAl2(SiO4)O
Al SillimaniteAl2(SiO4)O
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al NephelineNa3K(Al4Si4O16)
SiSilicon
Si QuartzSiO2
Si PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Si Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Si AegirineNaFe3+Si2O6
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si DiopsideCaMgSi2O6
Si ForsteriteMg2SiO4
Si ZirconZr(SiO4)
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si Garnet GroupX3Z2(SiO4)3
Si AndalusiteAl2(SiO4)O
Si KyaniteAl2(SiO4)O
Si SillimaniteAl2(SiO4)O
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si NephelineNa3K(Al4Si4O16)
KPotassium
K PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
K PhlogopiteKMg3(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
K NephelineNa3K(Al4Si4O16)
CaCalcium
Ca Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca CalciteCaCO3
Ca DiopsideCaMgSi2O6
Ca PerovskiteCaTiO3
TiTitanium
Ti PerovskiteCaTiO3
FeIron
Fe PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Fe AegirineNaFe3+Si2O6
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe MagnetiteFe2+Fe23+O4
ZrZirconium
Zr BaddeleyiteZrO2
Zr ZirconZr(SiO4)

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Neoproterozoic - Mesoproterozoic
541 - 1600 Ma



ID: 3188484
Mesoproterozoic-Neoproterozoic sedimentary rocks

Age: Proterozoic (541 - 1600 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Erlich, E.I., and Hausel, D.W. (2002): Diamond Deposits: Origin, Exploration and History of Discovery. SME Publishing, Littleton (CO), USA, pp. 179-190.


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