Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Spessartine from
Sycamore Mill (Bishop's Mill), Sycamore Mills, Upper Providence Township, Delaware County, Pennsylvania, USA


Classification
Species:Spessartine
Formula:Mn32+Al2(SiO4)3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Spessartine data
Locality Data:Click here to view Sycamore Mill (Bishop's Mill), Sycamore Mills, Upper Providence Township, Delaware County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:133549
Long-form Identifier:1:3:133549:1
GUID (UUID V4):0
Nearest other occurrences of Spessartine
5.1km (3.2 miles) ⓘDeshong's Quarry, Leiperville, Ridley Township, Delaware County, Pennsylvania, USA
7.7km (4.8 miles) ⓘLeiper's Upper Avondale Quarry, Wallingford, Ridley Township, Delaware County, Pennsylvania, USA
7.9km (4.9 miles) ⓘLeiper's Lower Avondale Quarry (Morrow Quarry; Facenda Quarry), Woodlyn (Avondale), Swarthmore (Borough of Swarthmore), Delaware County, Pennsylvania, USA
10.6km (6.6 miles) ⓘUpland Quarry, Chester Township, Delaware County, Pennsylvania, USA
12.9km (8.0 miles) ⓘBoothwyn, Upper Chichester Township, Delaware County, Pennsylvania, USA
16.0km (9.9 miles) ⓘOsborne Hill, Birmingham Township, Chester County, Pennsylvania, USA
41.1km (25.5 miles) ⓘWest Branch pegmatite, Newark, New Castle County, Delaware, USA
References
Rocks & Min.: 62: 176-178.
 
and/or  
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