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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Vivianite from
Fletcher Mine, Groton, Grafton County, New Hampshire, USA


Locality type:Mine
Classification
Species:Vivianite
Formula:Fe2+Fe22+(PO4)2 · 8H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Vivianite data
Locality Data:Click here to view Fletcher Mine, Groton, Grafton County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:37147
Long-form Identifier:1:3:37147:6
GUID (UUID V4):0
Nearest other occurrences of Vivianite
5.1km (3.2 miles) ⓘPalermo No. 1 Mine, Groton, Grafton County, New Hampshire, USA
5.3km (3.3 miles) ⓘPalermo No. 2 Mine, Groton, Grafton County, New Hampshire, USA
5.8km (3.6 miles) ⓘRice Quarry, Groton, Grafton County, New Hampshire, USA
9.5km (5.9 miles) ⓘEight-Ball Mica prospect, Rumney, Grafton County, New Hampshire, USA
11.9km (7.4 miles) ⓘKeyes Mica Quarries, Orange, Grafton County, New Hampshire, USA
11.9km (7.4 miles) ⓘNo. 1 pit, Keyes Mica Quarries, Orange, Grafton County, New Hampshire, USA
15.6km (9.7 miles) ⓘBullock Quarry, E.E. Smith Mine, Alexandria, Grafton County, New Hampshire, USA
15.8km (9.8 miles) ⓘE.E. Smith Mine, Alexandria, Grafton County, New Hampshire, USA
16.0km (9.9 miles) ⓘPattuck Quarry, Alexandria, Grafton County, New Hampshire, USA
22.9km (14.2 miles) ⓘRuggles Mine, Grafton, Grafton County, New Hampshire, USA
References
Smith, Arthur E. (2005) New Hampshire mineral locality index. Rocks & Minerals, 80 (4) 242-261 doi:10.3200/rmin.80.4.242-261
Kreinik, Susanna T. (2022) Phosphate Mineralogy and Paragenesis of the Fletcher Pegmatite, North Groton, New Hampshire. M.S. Thesis, 3039. University of New Orleans. 1-105
 
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