Arsenopyrite gallery

ARSENOPYRITE Gallery Return to Arsenopyrite page. Click on image for larger view
Arsenopyrite is likely responsible for the high levels of arsenic found in the water wells of southern Hillsborough county.
Locality: Mine Falls Park, Nashua, NH	Species: ARSENOPYRITE Locality: Mine Falls Park, Nashua, NH Specimen Size: 4 mm arsenopyrite crystal in quartz-mica matrix Field Collected: Tom Mortimer Catalog No.: U1040 Notes:
Locality: Mine Falls Park, Nashua, NH	Species: ARSENOPYRITE Locality: Mine Falls Park, Nashua, NH Specimen Size: Cluster of 1.5 mm arsenopyrite crystals in quartz-mica matrix. Field Collected: Tom Mortimer Catalog No.: U1039 Notes:
Locality: Mine Falls Park, Nashua, NH	Species: ARSENOPYRITE Locality: Mine Falls Park, Nashua, NH Specimen Size: A 12 inch wide, 20 pound chunk from a large sheet-like vein of arsenopyrite that was exposed at Mine Falls Park during construction of the hydro-electric plant in 1984. Field Collected: Tom Mortimer Catalog No.: Notes: This chunk is about 80% arsenopyrite, mixed with some quartz and mica. Slickenside surfaces are present on both sides.
Locality: Mine Falls Park, Nashua, NH	Species: ARSENOPYRITE - (casts) Locality: Mine Falls Park, Nashua, NH Specimen Size: 9 cm specimen with many diamond cross-section voids formally occupied by arsenopyrite crystals. Field Collected: Tom Mortimer Catalog No.: 798 Notes: This specimen is a testimony of the disolution of arsenopyrite releasing arsenic into the groundwater.
Locality: Mine Falls Park, Nashua, NH	Species: ARSENOPYRITE Locality: Mine Falls Park, Nashua, NH Specimen Size: 7 cm specimen of intergrown steel-gray arsenopyrite crystals with minor mica-quartz. Field Collected: Tom Mortimer Catalog No.: Notes: A typical Mine Falls Park arsenopyrite vein rock chunk. After the blasting for the hydrostation out-fall channel, hundreds of pounds of this vein were laying on the channel floor.
Locality: Mine Falls Park, Nashua, NH	Species: ARSENOPYRITE Locality: Mine Falls Park, Nashua, NH Specimen Size: 5 mm arsenopyrite crystal in quartz. Field Collected: Tom Mortimer Catalog No.: 653 Notes:
Locality: Westmoreland Crushed Stone Quarry, Westmoreland, NH	Species: ARSENOPYRITE Locality: Westmoreland Crushed Stone Quarry, Westmoreland, NH Specimen Size: Pair of 4 mm arsenopyrite crystals in slate-schist. Field Collected: Tom Mortimer Catalog No.: 671 Notes:
Locality: Franconia, NH	Species: ARSENOPYRITE Locality: Franconia, NH Specimen Size: Pair of 6 mm bronze tarnished arsenopyrite crystal in gray quartz. Field Collected: A purchased specimen Catalog No.: 1116 Notes:
Locality: Small prospect near summit South Uncanoonuc Mtn. Goffstown, NH	Species: ARSENOPYRITE Locality: Small prospect near summit South Uncanoonuc Mtn. Goffstown, NH Specimen Size: 4.5 cm specimen with vein of silver-color arsenopyrite in stained granite. Field Collected: Tom Mortimer Catalog No.: Notes: Tentative identification is arsenopyrite, but could be lollingite. Analysis pending.