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Shirokaya Valley, Lake Baikal area, Irkutsk Oblast, Russiai
Regional Level Types
Shirokaya ValleyValley
Lake Baikal areaMineral Occurrence Area
Irkutsk OblastOblast
RussiaCountry

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Latitude & Longitude (WGS84):
52° 49' 8'' North , 106° 38' 39'' East
Latitude & Longitude (decimal):
52.81890,106.64433
GeoHash:
G#: y37u6z2h3
GRN:
N36E47
Type:
Valley
KΓΆppen climate type:
Dwc : Monsoon-influenced subarctic climate
Mindat Locality ID:
439289
Long-form identifier:
mindat:1:2:439289:0
GUID (UUID V4):
c05f4393-1bd2-4233-a1f4-fa8fa14da8bf


The Ust’-Krestovsky complex of gabbro is composed of high-Ti and high-alkaline Ti-fassaite monzogabbro, pyroxenite, and nepheline-Ti augite rocks (phase 1) and phlogopite monzogabbro (phase 2), often altered to amphibolite and gneiss, with moderate Ti contents. The rocks of phase 1 form several small bodies along the sides of the Krestovsky Valley and are related to high-temperature pyroxene hornfels after the Birkhin porphyrite. Phase 2 rocks occur as part of the Ust’-Krestovsky intrusion within the Krestovsky Valley (Figure 4) and local dikes in marble. They are compositionally similar to subalkaline metagabbro in the Tazheran Massif and composite mafic dikes in northern Olkhon areas [18]. The Ust’-Krestovsky gabbro samples likewise bear suprasubduction signatures but differ from the Birkhin volcanoplutonic rocks in higher contents of Ti and incompatible elements.
The Shirokaya beerbachite appears as 500 m-wide exposures in a long and wide field between the Krestovsky and Bora-Elga gabbro intrusions, flanked by marble melange exposures in the northwest and southeast. The beerbachite and marble melange fields are separated from the gabbro of the Birkhin complex by amphibolite in low amphibolite facies. In addition to the main, thick beerbachite body, there are a few other occurrences: 2–3 m to ~20 m fragments in marble melange; a 30 m Γ— 8 m body within a small intrusion of the Birkhin gabbro, with buried gabbro–beerbachite contacts; and dismembered dikes in the Birkhin complex and in the marble melange field at the contact with the Ust’-Krestovsky gabbro.[[1]

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


13 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
β“˜ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
β“˜ Anorthite
Formula: Ca(Al2Si2O8)
β“˜ Anorthite var. Bytownite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
β“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜ 'Calcium Amphibole Subgroup var. Hornblende'
β“˜ 'Chrome-Spinel (of Dana)'
β“˜ Chromite
Formula: Fe2+Cr3+2O4
β“˜ 'Clinopyroxene Subgroup'
β“˜ Cummingtonite
Formula: ◻{Mg2}{Mg5}(Si8O22)(OH)2
β“˜ Diopside
Formula: CaMgSi2O6
β“˜ Dolomite
Formula: CaMg(CO3)2
β“˜ Ilmenite
Formula: Fe2+TiO3
β“˜ Magnetite
Formula: Fe2+Fe3+2O4
β“˜ 'Makite'
β“˜ 'Olivine Group'
Formula: M2SiO4
β“˜ 'Orthopyroxene Subgroup'
β“˜ Pentlandite
Formula: (NixFey)Ξ£9S8
β“˜ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
β“˜ Pigeonite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
β“˜ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
β“˜ 'Pyroxene Group'
Formula: ADSi2O6
β“˜ Spinel
Formula: MgAl2O4
β“˜ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Pentlandite2.BB.15(NixFey)Ξ£9S8
Group 4 - Oxides and Hydroxides
β“˜Spinel4.BB.05MgAl2O4
β“˜Chromite4.BB.05Fe2+Cr3+2O4
β“˜Magnetite4.BB.05Fe2+Fe3+2O4
β“˜Ilmenite4.CB.05Fe2+TiO3
Group 5 - Nitrates and Carbonates
β“˜Dolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
β“˜Zircon9.AD.30Zr(SiO4)
β“˜Pigeonite9.DA.10(CaxMgyFez)(Mgy1Fez1)Si2O6
β“˜Diopside9.DA.15CaMgSi2O6
β“˜Cummingtonite9.DE.05β—»{Mg2}{Mg5}(Si8O22)(OH)2
β“˜Actinolite9.DE.10β—»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
β“˜Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
β“˜Anorthite
var. Bytownite		9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
β“˜9.FA.35Ca(Al2Si2O8)
Unclassified
β“˜'Calcium Amphibole Subgroup
var. Hornblende'		-AnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
β“˜'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
β“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜'Clinopyroxene Subgroup'-
β“˜'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
β“˜'Pyroxene Group'-ADSi2O6
β“˜'Chrome-Spinel (of Dana)'-
β“˜'Orthopyroxene Subgroup'-
β“˜'Olivine Group'-M2SiO4
β“˜'Makite'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hβ“˜ Cummingtonite◻{Mg2}{Mg5}(Si8O22)(OH)2
Hβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
CCarbon
Cβ“˜ DolomiteCaMg(CO3)2
OOxygen
Oβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oβ“˜ AnorthiteCa(Al2Si2O8)
Oβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Oβ“˜ ChromiteFe2+Cr23+O4
Oβ“˜ Cummingtonite◻{Mg2}{Mg5}(Si8O22)(OH)2
Oβ“˜ DiopsideCaMgSi2O6
Oβ“˜ DolomiteCaMg(CO3)2
Oβ“˜ IlmeniteFe2+TiO3
Oβ“˜ MagnetiteFe2+Fe23+O4
Oβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Oβ“˜ Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oβ“˜ SpinelMgAl2O4
Oβ“˜ ZirconZr(SiO4)
Oβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oβ“˜ Pyroxene GroupADSi2O6
Oβ“˜ Olivine GroupM2SiO4
FFluorine
Fβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
Naβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Naβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgβ“˜ Cummingtonite◻{Mg2}{Mg5}(Si8O22)(OH)2
Mgβ“˜ DiopsideCaMgSi2O6
Mgβ“˜ DolomiteCaMg(CO3)2
Mgβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgβ“˜ Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgβ“˜ SpinelMgAl2O4
AlAluminium
Alβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alβ“˜ AnorthiteCa(Al2Si2O8)
Alβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Alβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Alβ“˜ SpinelMgAl2O4
Alβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siβ“˜ AnorthiteCa(Al2Si2O8)
Siβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Siβ“˜ Cummingtonite◻{Mg2}{Mg5}(Si8O22)(OH)2
Siβ“˜ DiopsideCaMgSi2O6
Siβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Siβ“˜ Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siβ“˜ ZirconZr(SiO4)
Siβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siβ“˜ Pyroxene GroupADSi2O6
Siβ“˜ Olivine GroupM2SiO4
SSulfur
Sβ“˜ Pentlandite(NixFey)Ξ£9S8
ClChlorine
Clβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caβ“˜ AnorthiteCa(Al2Si2O8)
Caβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Caβ“˜ DiopsideCaMgSi2O6
Caβ“˜ DolomiteCaMg(CO3)2
Caβ“˜ Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
TiTitanium
Tiβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiβ“˜ IlmeniteFe2+TiO3
CrChromium
Crβ“˜ ChromiteFe2+Cr23+O4
FeIron
Feβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feβ“˜ ChromiteFe2+Cr23+O4
Feβ“˜ IlmeniteFe2+TiO3
Feβ“˜ MagnetiteFe2+Fe23+O4
Feβ“˜ Pentlandite(NixFey)Ξ£9S8
Feβ“˜ Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
NiNickel
Niβ“˜ Pentlandite(NixFey)Ξ£9S8
ZrZirconium
Zrβ“˜ ZirconZr(SiO4)

Other Regions, Features and Areas containing this locality

AsiaContinent
Eurasian PlateTectonic Plate
Russia
Soviet Union (1922-1991)Country

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Sklyarov, Eugene V., Kargopolov, Sergei A., Lavrenchuk, Andrey V., Pushkarev, Evgenii V., Semenova, Dina V. (2023) Geology, Petrology, and Mineralogy of Hornfels-like Rocks (Beerbachite) in the Early Paleozoic Olkhon Collisional Orogen (West Baikal Area, Russia) Minerals, 13 (11) doi:10.3390/min13111370
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