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Summit Peak, Pennington Co., South Dakota, USA

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Latitude & Longitude (WGS84): 43° 54' 32'' North , 103° 32' 38'' West
Latitude & Longitude (decimal): 43.90915,-103.54409
GeoHash:G#: 9xy3gc3mr
Locality type:Peak
Köppen climate type:Dfb : Warm-summer humid continental climate


Sec 6 T2S R5E

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


9 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Andalusite
Formula: Al2(SiO4)O
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
'Apatite'
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Arsenopyrite
Formula: FeAsS
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Chloritoid
Formula: (Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Ilmenite
Formula: Fe2+TiO3
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Magnetite
Formula: Fe2+Fe3+2O4
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Sillimanite
Formula: Al2(SiO4)O
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Arsenopyrite'2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
'Ilmenite'4.CB.05Fe2+TiO3
'Magnetite'4.BB.05Fe2+Fe3+2O4
Group 9 - Silicates
'Albite'9.FA.35Na(AlSi3O8)
'Andalusite'9.AF.10Al2(SiO4)O
'Chloritoid'9.AF.85(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
'Clinochlore'9.EC.55Mg5Al(AlSi3O10)(OH)8
'Muscovite'9.EC.15KAl2(AlSi3O10)(OH)2
'Sillimanite'9.AF.05Al2(SiO4)O
Unclassified Minerals, Rocks, etc.
'Apatite'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Group 4 - SIMPLE OXIDES
A2X3
Ilmenite4.3.5.1Fe2+TiO3
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
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
Sillimanite52.2.2a.1Al2(SiO4)O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Chloritoid52.3.3.1(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Rocks, etc.
'Apatite'-

List of minerals for each chemical element

HHydrogen
H Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
H ClinochloreMg5Al(AlSi3O10)(OH)8
H MuscoviteKAl2(AlSi3O10)(OH)2
OOxygen
O AlbiteNa(AlSi3O8)
O AndalusiteAl2(SiO4)O
O Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
O ClinochloreMg5Al(AlSi3O10)(OH)8
O IlmeniteFe2+TiO3
O MagnetiteFe2+Fe23+O4
O MuscoviteKAl2(AlSi3O10)(OH)2
O SillimaniteAl2(SiO4)O
NaSodium
Na AlbiteNa(AlSi3O8)
MgMagnesium
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
AlAluminium
Al AlbiteNa(AlSi3O8)
Al AndalusiteAl2(SiO4)O
Al Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al SillimaniteAl2(SiO4)O
SiSilicon
Si AlbiteNa(AlSi3O8)
Si AndalusiteAl2(SiO4)O
Si Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si SillimaniteAl2(SiO4)O
SSulfur
S ArsenopyriteFeAsS
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
TiTitanium
Ti IlmeniteFe2+TiO3
FeIron
Fe ArsenopyriteFeAsS
Fe Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Fe IlmeniteFe2+TiO3
Fe MagnetiteFe2+Fe23+O4
AsArsenic
As ArsenopyriteFeAsS

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

Paleoproterozoic
1600 - 2500 Ma



ID: 3191697
Paleoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Paragneiss

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]

Paleoproterozoic
1600 - 2500 Ma



ID: 2727148
Metagraywacke

Age: Proterozoic (1600 - 2500 Ma)

Description: Light- to dark-gray, silceous mica schist and impure quartzite. Differentiated where possible into three primary tongues or lenses. (Xgw1, Xgw2, and Xgw3) Thickness from 1,000 ft to over 5,000 ft (305-1,524 m).

Lithology: Major:{mica schist,quartzite}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Paleoproterozoic
1600 - 2500 Ma



ID: 2472780
Metagraywacke unit 3

Age: Proterozoic (1600 - 2500 Ma)

Description: Upper part of metagraywacke unit Xgw. Gray to tan siliceous schist containing minor chlorite, garnet, or staurolite in pelitic parts of Bouma sequences or in thin shale subunits at various metamorphic grades. Protoliths are turbidite deposits. Unit overlies mica schist (unit Xts) in central part of map area but pinches out or is lensoid to the northwest and west. Shown as unit Xgw where unit Xts pinches out north of Pactola Lake. Maximum thickness is about 700 m.

Reference: Redden, J.A., E. DeWitt. Maps Showing Geology, Structure, and Geophysics of the Central Black Hills, South Dakota. U.S. Geological Survey Scientific Investigations Map 2777. [73]

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


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