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Lake Kumdikol diamond deposit, Lake Kumdikol (Lake Kumdykol'; Ozero Kumdykol'), Prirechnoye, Zerendi District, Akmola Region, Kazakhstani
Regional Level Types
Lake Kumdikol diamond depositDeposit
Lake Kumdikol (Lake Kumdykol'; Ozero Kumdykol')Lake
Prirechnoye- not defined -
Zerendi DistrictDistrict
Akmola RegionRegion
KazakhstanCountry

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Latitude & Longitude (WGS84):
53° North , 68° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~1km
Type:
Mindat Locality ID:
10155
Long-form identifier:
mindat:1:2:10155:1
GUID (UUID V4):
0
Name(s) in local language(s):
(Kumdy-Kol)


Located on the southwestern shore of Lake Kumdikol, 30 km southwest of the town Kokshetau. The compositions of rocks is (from the bottom upwards): garnet plagiogneisses, garnet-biotite gneisses, plagiomagmatites, garnet-muscovite shales; garnet-muscovite leucocratic granites and gneiss-granites; garnet-biotite and biotite gneisses, quartz microgneisses with interlayers of calciphyries, boudinages of eclogites, and bodies of garnet-pyroxene rocks; garnet migmatites and plagiogneisses; garnet-muscovite, muscovite-biotite and muscovite shales; eclogites and amphibole eclogites.The thickness of the rocks is around 1000m.

There is a discrete zone containing most of the diamonds and beyond it the content drops. The orebody occurs as a flattened, lens-shaped body that extends southwesterly. Diamonds' distribution is uneven. High grades are confined to graphite quartz-sericite-chlorite, quartz-pyroxene, pyroxene-carbonate and other metasomatites. Areas with high concentration of diamonds are separated by low diamond content or without diamonds.
Most of the diamonds are associated with garnet; a little amount is found in biotite; rare crystals are present in pyroxene, amphibole, quartz, ziosite and muscovite. Diamonds often occur at the contacts between different minerals.

Kamdykol diamonds are small and have different morphological properties and mostly contain cubic crystals.85 per cent of the diamonds have a size of less than 50µm. Large crystals have been found: 0.5-1.65 mm crystals in eclogites; octahedra over 1.00mm in garnet-pyroxene rock; 2.95 mm crystals were found in sands from Kumdykol lake.

The cubic crystals have yellow-green colour; octahedral crystals are water transparent; spheroids are pale yellow. Some crystals display weak luminescence. Kumdykol diamonds contain sodium, aluminium, antimony, arsenic, gold, potassium, chromium, manganese, rare earth minerals.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


31 valid minerals. 2 (TL) - type locality of valid minerals.

Detailed Mineral List:

Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Albite
Formula: Na(AlSi3O8)
Andalusite
Formula: Al2(SiO4)O
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Aragonite
Formula: CaCO3
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Calcite
Formula: CaCO3
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Description: Replaces majoritic garnet during exhumation. In dolomite marbles.
Clinohumite
Formula: Mg9(SiO4)4F2
Description: In diamond-free dolomitic marble.
'Clinopyroxene Subgroup'
Coesite
Formula: SiO2
Diamond
Formula: C
Diopside
Formula: CaMgSi2O6
Dolomite
Formula: CaMg(CO3)2
Description: Dolomite --> Aragonite + magnesite. In dolomitic marbles.
Forsterite
Formula: Mg2SiO4
Description: In diamond-free dolomitic marble. American Geophysical Union, Fall Meeting 2004, abstract #T21A-0501 Publication Date: 12/2004
Graphite
Formula: C
Description: Decomposition of magnesite during exhumation. In dolomite marbles.
Hydroxylclinohumite var. Titanclinohumite
Formula: (Mg,Ti)9(SiO4)4(OH,F)2
Description: In diamond-free dolomitic marble.
'K Feldspar'
Kokchetavite (TL)
Formula: K(AlSi3O8)
Type Locality:
Kumdykolite (TL)
Formula: Na(AlSi3O8)
Type Locality:
Kyanite
Formula: Al2(SiO4)O
Lonsdaleite
Formula: C
Magnesite
Formula: MgCO3
Description: Inclusions in majoritic garnet. In dolomite marbles.
Magnetite
Formula: Fe2+Fe3+2O4
Magnetite var. Titanium-bearing Magnetite
Formula: Fe2+(Fe3+,Ti)2O4
Majorite
Formula: Mg3(MgSi)(SiO4)3
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Muscovite var. Phengite
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Description: Exsolutions in supersiliceous clinopyroxene.
Pyrope
Formula: Mg3Al2(SiO4)3
Description: In dolomite marbles.
Quartz
Formula: SiO2
Description: Exsolutions in supersiliceous clinopyroxene.
Rutile
Formula: TiO2
Sillimanite
Formula: Al2(SiO4)O
Spinel
Formula: MgAl2O4
Description: In symplectites with diopside and magnesian calcite, in dolomite marble.
Titanite
Formula: CaTi(SiO4)O
'Tourmaline'
Formula: AD3G6(T6O18)(BO3)3X3Z
Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2
Description: In diopside of dolomitic marbles.
Zircon
Formula: Zr(SiO4)
Description: In dolomite marbles.
Zoisite
Formula: (CaCa)(AlAlAl)O[Si2O7][SiO4](OH)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Graphite1.CB.05aC
Diamond1.CB.10aC
Lonsdaleite1.CB.10bC
Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Spinel4.BB.05MgAl2O4
Magnetite
var. Titanium-bearing Magnetite
4.BB.05Fe2+(Fe3+,Ti)2O4
Quartz4.DA.05SiO2
Coesite4.DA.35SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Magnesite5.AB.05MgCO3
Dolomite5.AB.10CaMg(CO3)2
Aragonite5.AB.15CaCO3
Group 9 - Silicates
Forsterite9.AC.05Mg2SiO4
Majorite9.AD.25Mg3(MgSi)(SiO4)3
Pyrope9.AD.25Mg3Al2(SiO4)3
Zircon9.AD.30Zr(SiO4)
Sillimanite9.AF.05Al2(SiO4)O
Andalusite9.AF.10Al2(SiO4)O
Kyanite9.AF.15Al2(SiO4)O
Clinohumite9.AF.55Mg9(SiO4)4F2
Hydroxylclinohumite
var. Titanclinohumite
9.AF.55(Mg,Ti)9(SiO4)4(OH,F)2
Titanite9.AG.15CaTi(SiO4)O
Zoisite9.BG.10(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Diopside9.DA.15CaMgSi2O6
Actinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Tremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var. Phengite9.EC.15KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
Albite9.FA.35Na(AlSi3O8)
Kumdykolite (TL)9.FA.45Na(AlSi3O8)
Kokchetavite (TL)9.FA.75K(AlSi3O8)
Unclassified
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
'Tourmaline'-AD3G6(T6O18)(BO3)3X3Z
'Clinopyroxene Subgroup'-
'K Feldspar'-
'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
H Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
H ClinochloreMg5Al(AlSi3O10)(OH)8
H MuscoviteKAl2(AlSi3O10)(OH)2
H Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
H PhlogopiteKMg3(AlSi3O10)(OH)2
H Tremolite◻Ca2Mg5(Si8O22)(OH)2
H Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
H Hydroxylclinohumite var. Titanclinohumite(Mg,Ti)9(SiO4)4(OH,F)2
H Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
H ApatiteCa5(PO4)3(Cl/F/OH)
BBoron
B TourmalineAD3G6(T6O18)(BO3)3X3Z
CCarbon
C AragoniteCaCO3
C CalciteCaCO3
C DiamondC
C DolomiteCaMg(CO3)2
C GraphiteC
C LonsdaleiteC
C MagnesiteMgCO3
OOxygen
O Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
O AlbiteNa(AlSi3O8)
O AndalusiteAl2(SiO4)O
O AragoniteCaCO3
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
O CalciteCaCO3
O ClinochloreMg5Al(AlSi3O10)(OH)8
O ClinohumiteMg9(SiO4)4F2
O CoesiteSiO2
O DiopsideCaMgSi2O6
O DolomiteCaMg(CO3)2
O ForsteriteMg2SiO4
O KyaniteAl2(SiO4)O
O MagnesiteMgCO3
O MagnetiteFe2+Fe23+O4
O MajoriteMg3(MgSi)(SiO4)3
O MuscoviteKAl2(AlSi3O10)(OH)2
O Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
O PhlogopiteKMg3(AlSi3O10)(OH)2
O PyropeMg3Al2(SiO4)3
O QuartzSiO2
O RutileTiO2
O SillimaniteAl2(SiO4)O
O SpinelMgAl2O4
O TitaniteCaTi(SiO4)O
O Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
O TourmalineAD3G6(T6O18)(BO3)3X3Z
O Tremolite◻Ca2Mg5(Si8O22)(OH)2
O ZirconZr(SiO4)
O Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
O Hydroxylclinohumite var. Titanclinohumite(Mg,Ti)9(SiO4)4(OH,F)2
O Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
O KokchetaviteK(AlSi3O8)
O ApatiteCa5(PO4)3(Cl/F/OH)
O KumdykoliteNa(AlSi3O8)
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
F ClinohumiteMg9(SiO4)4F2
F Hydroxylclinohumite var. Titanclinohumite(Mg,Ti)9(SiO4)4(OH,F)2
F ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Na AlbiteNa(AlSi3O8)
Na KumdykoliteNa(AlSi3O8)
MgMagnesium
Mg Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg ClinohumiteMg9(SiO4)4F2
Mg DiopsideCaMgSi2O6
Mg DolomiteCaMg(CO3)2
Mg ForsteriteMg2SiO4
Mg MagnesiteMgCO3
Mg MajoriteMg3(MgSi)(SiO4)3
Mg Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg PyropeMg3Al2(SiO4)3
Mg SpinelMgAl2O4
Mg Tremolite◻Ca2Mg5(Si8O22)(OH)2
Mg Hydroxylclinohumite var. Titanclinohumite(Mg,Ti)9(SiO4)4(OH,F)2
AlAluminium
Al AlbiteNa(AlSi3O8)
Al AndalusiteAl2(SiO4)O
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al KyaniteAl2(SiO4)O
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al PyropeMg3Al2(SiO4)3
Al SillimaniteAl2(SiO4)O
Al SpinelMgAl2O4
Al Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Al Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Al KokchetaviteK(AlSi3O8)
Al KumdykoliteNa(AlSi3O8)
SiSilicon
Si Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Si AlbiteNa(AlSi3O8)
Si AndalusiteAl2(SiO4)O
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si ClinohumiteMg9(SiO4)4F2
Si CoesiteSiO2
Si DiopsideCaMgSi2O6
Si ForsteriteMg2SiO4
Si KyaniteAl2(SiO4)O
Si MajoriteMg3(MgSi)(SiO4)3
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si PyropeMg3Al2(SiO4)3
Si QuartzSiO2
Si SillimaniteAl2(SiO4)O
Si TitaniteCaTi(SiO4)O
Si Tremolite◻Ca2Mg5(Si8O22)(OH)2
Si ZirconZr(SiO4)
Si Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Si Hydroxylclinohumite var. Titanclinohumite(Mg,Ti)9(SiO4)4(OH,F)2
Si Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Si KokchetaviteK(AlSi3O8)
Si KumdykoliteNa(AlSi3O8)
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
K PhlogopiteKMg3(AlSi3O10)(OH)2
K Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
K KokchetaviteK(AlSi3O8)
CaCalcium
Ca Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Ca AragoniteCaCO3
Ca CalciteCaCO3
Ca DiopsideCaMgSi2O6
Ca DolomiteCaMg(CO3)2
Ca TitaniteCaTi(SiO4)O
Ca Tremolite◻Ca2Mg5(Si8O22)(OH)2
Ca Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Ca ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Ti BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Ti RutileTiO2
Ti TitaniteCaTi(SiO4)O
Ti Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
Ti Hydroxylclinohumite var. Titanclinohumite(Mg,Ti)9(SiO4)4(OH,F)2
FeIron
Fe Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fe MagnetiteFe2+Fe23+O4
Fe Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Fe Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
ZrZirconium
Zr ZirconZr(SiO4)

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