GRN grid region: N29W44A grid 'square' of approximately 160km x 160km, part of the Global Reference Network of 19,833 grid cells covering the Earth.
43 30'0'' N , 81 22'5'' W ( 43.5,-81.3683 )
42 0'0'' N , 83 15'42'' W ( 42,-83.2617 )
Select Mineral List TypeStandard Detailed Gallery Strunz Dana Chemical Elements
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
32 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
Localities within grid area
- ⭔Lapeer Co.
- ⭔Macomb Co.
- Monroe Co.
- Berlin Charter Township
- Ritter's Clay Pit
- South Rockwood Clay Mine (Ritter and Sons Company)
- Oakland Co.
- ⭔Sanilac Co.
- Sanilac Co.
- ⭔St. Clair Co.
- Amcord Cement Company Pit (Cement Company; Division of Peerless Cement; Amcord)
- Engleman's Clay Pit
- Lake St. Clair
- Marine City Well
- Port Huron Salt Company
- Saint Clair wells
- Shriner Brick Company Clay Pit
- St. Clair Salt Mine (Diamond Crystal)
- W. Avoca Clay Sample Prospect
- W. River Clay Sample Prospect
- ⭔Wayne Co.