Lubec Lead mine (Solomon Thayer Mine), Lubec, Washington Co., Maine, USA
|Latitude & Longitude (WGS84):||44° 50' 23'' North , 67° 3' 9'' West|
|Latitude & Longitude (decimal):||44.83984,-67.05277|
|Köppen climate type:||Dfb : Warm-summer humid continental climate|
Vein sulfide deposit. First mine in coastal Maine, first operated ca. 1832. Scattered dumps along the beach off Lead Mine Road. The local tidal change between high and low tide can be about 6.7 meters (22 feet). Be aware of when the next high tide is and be aware where any places might be covered by water blocking your escape. The location of sea weed growing on the beach rocks shows where the the high tide will cover that part of the beach. Be safe.
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
26 valid minerals. 3 erroneous literature entries.
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
419.2 - 443.8 Ma
|Silurian Leighton Formation, mafic to felsic volcanic rock member|
Age: Silurian (419.2 - 443.8 Ma)
Stratigraphic Name: Leighton Formation
Comments: Secondary unit description from USGS Geologic Names lexicon (re. ME078): Used as Early Silurian(?) Greenvale Cove Formation. Consists of grayish-violet interlaminated metashale, feldspathic metasandstone, and calc-silicate rock of Piermont allochthon of western NH. GS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; Protolith J - Calcareous lithic sandstone
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.