1. Mineral Resources
  2. Online Spatial Data
  3. Geology
  4. by state
  5. Alabama

Mad Indian Group; Irregular zones of sericite-quartz schist

XML
JSON
Shapefile
Irregular zones of sericite-quartz schist (+/- garnet) containing finely disseminated graphite, possibly infolded Wedowee Group equivalents. Both mi and migr extensively cut by feldspathic dikes and pegmatites.
State Alabama
Name Mad Indian Group; Irregular zones of sericite-quartz schist
Geologic age Precambrian to Paleozoic
Lithologic constituents
Major
Metamorphic > Schist > Mica-schistirregular zones of sericite-quartz schist (+/- garnet) containing finely disseminated graphite
Minor
Igneous > Plutonic > Granitic > Leucocratic-granitic > Pegmatite (Dike or sill)Extensively cut by feldspathic dikes and pegmatites.
Comments Printed map includes map units 'mi and migr' in one description; split them up here.
References

Szabo, M.W., Osborne, E.W., Copeland, C.W. Jr., and Neathery, T.L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000.
NGMDB product
Counties Clay - Randolph