|Latitude & Longitude (WGS84):||39° 57' 7'' North , 75° 56' 3'' West|
|Latitude & Longitude (decimal):||39.95194,-75.93417|
|Köppen climate type:||Cfa : Humid subtropical climate|
Of Genth; "Finest locality in Sadsbury township, for the principal locality for Rutile in Chester County PA. Considerable quantity of Rutile had been collected in the early to mid 19th century, Doubly geniculated crystals up to a pound in weight had been found loose in surrounding soils and worked up by manufacturers of dental supplies, for coloring artificial teeth. also found embedded in Quartz and soils throughout the 7 mile long valley.
Regions containing this locality
|North America Plate||Tectonic Plate|
Select Mineral List TypeStandard Detailed Strunz Dana Chemical Elements
Detailed Mineral List:
Habit: Pseudomorph after cubic Pyrite
Colour: Brown to reddish brown, submetalic luster
Description: One of several primary localities in Pennsylvania for the occurrance of Limonite pseudomorphs after cubic pyrite. Specimens tend to cubic form without notable abboration/distortions. Frequently sharp, with good pseudo crystal edging.
Habit: tetragonal usually conststing of several prisms , frequently in double "geniculated" twins
Colour: Reddish Brown, inclining to red
Description: the finest locality for Rutile in PA, where crystals up to a pound in weight were found (19th century). Large twined crystals were found elsewhere in the soils throughout this 7 mile long region, along the Sadsbury township area.
Reference: Second Geological Survey of Pensylvania: 1874 Preliminary Report on the Mineralogy of Pennsylvania: F. A. Genth, pgs. 44,45 and 97
| ⓘ 'Tourmaline'|
Description: occurs in Quartz
Reference: Second Geological Survey of Pensylvania: 1874 Preliminary Report on the Mineralogy of Pennsylvania: F. A. Genth, pg. 97
List of minerals arranged by Strunz 10th Edition classification
|Group 4 - Oxides and Hydroxides|
|Unclassified Minerals, Rocks, etc.|
List of minerals arranged by Dana 8th Edition classification
|Group 4 - SIMPLE OXIDES|
|Unclassified Minerals, Mixtures, etc.|
List of minerals for each chemical element
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
|Ordovician - Cambrian|
443.8 - 541 Ma
Age: Paleozoic (443.8 - 541 Ma)
Stratigraphic Name: Conestoga Formation
Description: Light-gray, thin-bedded, impure, contorted limestone having shale partings; conglomeratic at base; in Chester Valley, includes micaceous limestone in upper part, phyllite in middle, and alternating dolomite and limestone in lower part.
Comments: Original map source: Pennsylvania Bureau of Topographic and Geologic Survey, Department of Conservation and Natural Resources, Miles, C.E., and Whitfield, T.G., compilers, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map, scale 1:250,000.
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. 
485.4 - 541 Ma
|Paleozoic sedimentary rocks|
Age: Cambrian (485.4 - 541 Ma)
Lithology: Sedimentary 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.