Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Opal from
Yedlin Locality, Standpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA


03425800017272014912741.jpg
Opal-AN

Yedlin Locality, Standpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
00173330017271980096310.jpg
Opal-AN

Yedlin Locality, Standpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
03207640017271980126379.jpg
Opal-AN

Yedlin Locality, Standpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
00285460017867604009353.jpg
Opal-AN

Yedlin Locality, Standpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
09825540017367457004085.jpg
Opal-AN

Yedlin Locality, Standpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
05387490017367457019886.jpg
Opal-AN

Yedlin Locality, Standpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
03425800017272014912741.jpg
Opal-AN

Yedlin Locality, Standpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
00173330017271980096310.jpg
Opal-AN

Yedlin Locality, Standpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
03207640017271980126379.jpg
Opal-AN

Yedlin Locality, Standpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
Locality type:Prospect
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Yedlin Locality, Standpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:985452
Long-form Identifier:1:3:985452:9
GUID (UUID V4):0
Nearest other occurrences of Opal
5.5km (3.4 miles) ⓘWilliam Willes #1 Quarry, Topsham, Sagadahoc County, Maine, USA
31.1km (19.3 miles) ⓘMaine Feldspar Quarry, East Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
40.6km (25.2 miles) ⓘHeath Quarry, Casco, Cumberland County, Maine, USA
54.6km (33.9 miles) ⓘBennett Quarry, Buckfield, Oxford County, Maine, USA
55.3km (34.3 miles) ⓘMount Mica Quarry, Paris, Oxford County, Maine, USA
57.0km (35.4 miles) ⓘRyerson Hill Quarries, Paris, Oxford County, Maine, USA
60.0km (37.3 miles) ⓘStarrett Quarries, Warren, Knox County, Maine, USA
65.2km (40.5 miles) ⓘEstes Quarry, West Baldwin, Baldwin, Cumberland County, Maine, USA
66.8km (41.5 miles) ⓘHeikkinen Quarry, Greenwood, Oxford County, Maine, USA
67.1km (41.7 miles) ⓘHayes Ledge Quarries (East and West), Greenwood, Oxford County, Maine, USA
References
Thompson, Woodrow B., Joyner, Ronald L., Woodman, Raymond G., King, Vandall T. (1998) Bulletin (41), A Collector's Guide to Maine Mineral Localities (3rd ed.) Maine Geological Survey
 
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