Middleville, Town of Newport, Herkimer Co., New York, USA
|Latitude & Longitude (WGS84):||43° 8' 19'' North , 74° 58' 7'' West|
|Latitude & Longitude (decimal):||43.1386111111, -74.9686111111|
The village of Middleville straddles the Newport/Fairfield line. Both the Ace of Diamonds Mine and the Herkimer Diamond Mine are west of West Canada Creek in the town of Newport.
Mineral ListMineral list contains entries from the region specified including sub-localities
Rock Types RecordedEntries shown in red are rocks recorded for this region.
Rock list contains entries from the region specified including sub-localities
|Cambrian-Ordovician443.8 - 541 Ma||Cambrian-Ordovician sedimentary rocks|
|Middle Ordovician458.4 - 470 Ma||Middle Ordovician sedimentary|
|Early Ordovician - Furongian470 - 497 Ma||Beekmantown Group (in part)|
Beekmantown Group (in part) - In Champlain Valley: Whitehall Formation-dolostone, limestone (with Cryptozoon reefs); Ticonderoga Formation-dolostone (locally cherty), sandstone. In Vermont: Clarendon Springs Dolostone; Danby Formation-sandstone, quartzite, dolostone.
part of Beekmantown Group, Potsdam Sandstone, and Vermont Valley Sequence up to 2500 ft. (760 m). Secondary unit descriptions from USGS Lexicon website (ref. NY046) and references NY037 and NY038. The Beekmantown Group in east-central NY includes the (ascending) Potsdam Sandstone, Ticonderoga Formation, Whitehall Formation, Great Meadows Formation, Fort Ann Formation, and Fort Cassin Formation. The Cambrian-Ordovician boundary is within the Whitehall Formation, and therefore, the Beekmantown Group is of Late Cambrian to Early Ordovician age (Croixian to Canadian). Unit overlies the Lake George Group and underlies the Black River Group (Fisher, 1984). Paleozoic cover sequence adjacent to Adirondack massif in western part of Glens Falls quad consists of (ascending): Late Cambrian Potsdam Sandstone, Late Cambrian Ticonderoga Formation, Late Cambrian and Early Ordovician Beekmantown Group (with Whitehall Formation at base), early Middle Ordovician Chazy Group, Middle Ordovician Black River and Trenton Groups, and Mohawk Valley shales (Canajoharie Shale and Snake Hill Formation). Potsdam and Ticonderoga are partly correlative with Danby Formation of Middlebury synclinorium in VT. Beekmantown and part of Chazy correlate directly with limestones and dolomites above Danby. Paleozoic cover sequence is interpreted as a platform sequence. [Text states Beekmantown as used by Fisher (1984), but this appears to be an error because Fisher (1984) included Potsdam and Ticonderoga in his Beekmantown. Fisher (1977) abandoned Canajoharie but USGS still recognizes it.] (Thompson, 1990).
References for regional geology:
Data provided by Macrostrat.org
Garrity, C.P., and Soller, D.R.,. Database of the Geologic Map of North America: adapted from the map by J.C. Reed, Jr. and others (2005). U.S. Geological Survey Data Series 424 .
USGS compilers. State geologic map data. State Maps.
Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d.
4 valid minerals.
Localities in this Region
- New York
- Herkimer Co.
- Town of Newport
- Herkimer Co.