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Semyenov-3 Hydrothermal Field, Semenov region, Mid-Atlantic Ridge complex, Atlantic Oceani
Regional Level Types
Semyenov-3 Hydrothermal FieldHydrothermal Vent
Semenov regionRegion
Mid-Atlantic Ridge complexMid-Ocean Ridge
Atlantic OceanOcean

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Latitude & Longitude (WGS84):
13° 30' 39'' North , 44° 55' 0'' West
Latitude & Longitude (decimal):
13.51111,-44.91667
GRN:
N10W31
Type:
Hydrothermal Vent
Mindat Locality ID:
345154
Long-form identifier:
mindat:1:2:345154:3
GUID (UUID V4):
0


Semenov-3 field is located on the northeastern slope of the seamount at depths of 2400–2600 m and is associated with altered basalts. Sulfide breccias containing marcasite–pyrite clasts enclosed by a sulfide–quartz matrix, with numerous fractures and cavities encrusted with barite crystals, were recovered from the seafloor in 2007, while massive sulfides dominated by pyrite and marcasite were dredged in 2009. The 230Th/234U age of sulfide samples dredged in 2007 ranges from 35.5 to 90.3 thousand years.

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:

ⓘ Baryte
Formula: BaSO4
ⓘ Bornite
Formula: Cu5FeS4
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Cinnabar
Formula: HgS
ⓘ Covellite
Formula: CuS
ⓘ Hematite
Formula: Fe2O3
ⓘ Hematite var. Specularite
Formula: Fe2O3
ⓘ Jarosite
Formula: KFe3+3(SO4)2(OH)6
ⓘ Marcasite
Formula: FeS2
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
ⓘ Rutile
Formula: TiO2
ⓘ Sphalerite
Formula: ZnS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘBornite2.BA.15Cu5FeS4
ⓘCovellite2.CA.05aCuS
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘCinnabar2.CD.15aHgS
ⓘPyrite2.EB.05aFeS2
ⓘMarcasite2.EB.10aFeS2
Group 4 - Oxides and Hydroxides
ⓘHematite4.CB.05Fe2O3
ⓘvar. Specularite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘRutile4.DB.05TiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
ⓘJarosite7.BC.10KFe3+3(SO4)2(OH)6
Unclassified
ⓘ'Chlorite Group'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8

List of minerals for each chemical element

HHydrogen
Hⓘ JarositeKFe33+(SO4)2(OH)6
OOxygen
Oⓘ BaryteBaSO4
Oⓘ HematiteFe2O3
Oⓘ JarositeKFe33+(SO4)2(OH)6
Oⓘ QuartzSiO2
Oⓘ RutileTiO2
Oⓘ Hematite var. SpeculariteFe2O3
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
NaSodium
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
AlAluminium
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ QuartzSiO2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SSulfur
Sⓘ BaryteBaSO4
Sⓘ BorniteCu5FeS4
Sⓘ ChalcopyriteCuFeS2
Sⓘ CinnabarHgS
Sⓘ CovelliteCuS
Sⓘ JarositeKFe33+(SO4)2(OH)6
Sⓘ MarcasiteFeS2
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
Sⓘ SphaleriteZnS
KPotassium
Kⓘ JarositeKFe33+(SO4)2(OH)6
CaCalcium
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
TiTitanium
Tiⓘ RutileTiO2
FeIron
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ HematiteFe2O3
Feⓘ JarositeKFe33+(SO4)2(OH)6
Feⓘ MarcasiteFeS2
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
Feⓘ Hematite var. SpeculariteFe2O3
CuCopper
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ CovelliteCuS
ZnZinc
Znⓘ SphaleriteZnS
BaBarium
Baⓘ BaryteBaSO4
HgMercury
Hgⓘ CinnabarHgS

Other Regions, Features and Areas containing this locality

African PlateTectonic Plate
Atlantic OceanOcean

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

Safina, N. P., Melekestseva, I. Y., Nimis, P., Ankusheva, N. N., Yuminov, A. M., Kotlyarov, V. A., & Sadykov, S. A. (2016). Barite from the Saf’yanovka VMS deposit (Central Urals) and Semenov-1 and Semenov-3 hydrothermal sulfide fields (Mid-Atlantic Ridge): a comparative analysis of formation conditions. Mineralium Deposita, 51(4), 491-507.
Melekestseva, Irina, Maslennikov, Valery, Safina, Nataliya, Nimis, Paolo, Maslennikova, Svetlana, Beltenev, Victor, Rozhdestvenskaya, Irina, Danyushevsky, Leonid, Large, Ross, Artemyev, Dmitry, Kotlyarov, Vasily, Toffolo, Luca (2018) Sulfide Breccias from the Semenov-3 Hydrothermal Field, Mid-Atlantic Ridge: Authigenic Mineral Formation and Trace Element Pattern. Minerals, 8 (8) 321 doi:10.3390/min8080321
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