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Shimliguda, Pāderu, Eastern Ghats Belt, Visakhapatnam District, Andhra Pradesh, Indiai
Regional Level Types
Shimliguda- not defined -
Pāderu- not defined -
Eastern Ghats BeltBelt
Visakhapatnam DistrictDistrict
Andhra Pradesh- not defined -

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Latitude & Longitude (WGS84): 18° 18' 9'' North , 82° 57' 14'' East
Latitude & Longitude (decimal): 18.30264,82.95403
GeoHash:G#: tg6bpevk8
Köppen climate type:Aw : Tropical savanna, wet

The major rock unit is a leptynitic gneiss (quartz-plagioclase-garnet-K-feldspar) that is migmatitic in nature in places. This leptynitic gneiss contains foliation-parallel elongated enclaves of gneissic aluminous granulite. The gneissic foliations in both the aluminous granulite and the host migmatitic gneiss are parallel. Layer parallel bands of charnockitic gneiss (quartz-K-feldspar-orthopyroxene-plagioclase-garnet) are present in the host migmatite (Das et al., 2006).

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

5 valid minerals.

Detailed Mineral List:

Formula: Fe2+3Al2(SiO4)3
Description: Composition: Pyrope 44, Almandine 53, (Grossular + Spessartine) 03.
Reference: American Mineralogist: 91: 375-384.
Formula: (Mg,Fe)2Al3(AlSi5O18)
Reference: American Mineralogist: 91: 375-384.
Formula: Mg4(Mg3Al9)O4[Si3Al9O36]
Reference: American Mineralogist: 91: 375-384.
Formula: Al2(SiO4)O
Reference: American Mineralogist: 91: 375-384.
Formula: MgAl2O4
Reference: American Mineralogist: 91: 375-384.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Group 9 - Silicates

List of minerals arranged by Dana 8th Edition classification

Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
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
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with Al substituted rings
Group 69 - INOSILICATES Chains with Side Branches or Loops
Chains with Side Branches or Loops with P>2

List of minerals for each chemical element

O AlmandineFe32+Al2(SiO4)3
O Cordierite(Mg,Fe)2Al3(AlSi5O18)
O SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
O SillimaniteAl2(SiO4)O
O SpinelMgAl2O4
Mg Cordierite(Mg,Fe)2Al3(AlSi5O18)
Mg SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
Mg SpinelMgAl2O4
Al AlmandineFe32+Al2(SiO4)3
Al Cordierite(Mg,Fe)2Al3(AlSi5O18)
Al SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
Al SillimaniteAl2(SiO4)O
Al SpinelMgAl2O4
Si AlmandineFe32+Al2(SiO4)3
Si Cordierite(Mg,Fe)2Al3(AlSi5O18)
Si SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
Si SillimaniteAl2(SiO4)O
Fe AlmandineFe32+Al2(SiO4)3
Fe Cordierite(Mg,Fe)2Al3(AlSi5O18)

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

2500 - 4000 Ma

ID: 3191080
Archean crystalline metamorphic rocks

Age: Archean (2500 - 4000 Ma)

Lithology: Crystalline metamorphic 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


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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Das, K., Bose, S., Ohnishi, I., Dasgupta, S. (2006) Garnet-spinel intergrowths in ultrahigh-temperature granulite, Eastern Ghats, India: Possible evidence of an early Tschermak-rich orthopyroxene during prograde metamorphism. American Mineralogist: 91: 375-384.

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