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Peter Cristofono's Photo Gallery

JU7-7AMCollinsite : Ca2Mg(PO4)2·2H2O

Multiple photos available
Dunton Gem Quarry, Newry, Oxford Co., Maine, USA

Field of View: 22 mm

A sheaf-like crystalline aggregate of collinsite, collected at the Dunton quarry by Ingebord Burggraf. The mineral was provisionally identified by her as either messelite or collinsite. A recent SEM-EDS analysis (see child photo for data) shows the mineral to be collinsite.
Copyright: © 2018 Peter Cristofono      Photo ID: 885959     Uploaded by: Peter Cristofono   View Count: 13   Approval status: Public galleries    Type: Photo - 1716 x 1210 pixels (2.1 Mpix)

15C-7MRTriphylite : LiFe2+PO4

Estes Quarry, West Baldwin, Baldwin, Cumberland Co., Maine, USA

Largest Crystal Size: 6.3 cm

6.3 cm triphylite crystal in quartz. Field collected by Gene T. Bearss.
Copyright: © 2018 Peter Cristofono      Photo ID: 880846     Uploaded by: Peter Cristofono   View Count: 20   Approval status: Public galleries    Type: Photo - 701 x 1067 pixels (0.7 Mpix)

F9C-6EDMuscovite : KAl2(AlSi3O10)(OH)2

Bumpus Quarry, Albany, Oxford Co., Maine, USA

Field of View: 15 cm

Large muscovite crystal in pegmatite. Field photo, taken August 9, 2015.
Copyright: © 2018 Peter Cristofono      Photo ID: 879221     Uploaded by: Peter Cristofono   View Count: 22   Approval status: Public galleries    Type: Photo - 2534 x 1664 pixels (4.2 Mpix)

382-848Fluorite : CaF2

Nanny Goat Hill, Woburn, Middlesex Co., Massachusetts, USA

Field of View: 22 mm

Light to dark purple fluorite from a former construction site on Nanny Goat Hill. Field collected by Dana M. Jewell.
Copyright: © 2018 Peter Cristofono      Photo ID: 878927     Uploaded by: Peter Cristofono   View Count: 10   Approval status: Public galleries    Type: Photo - 1677 x 1065 pixels (1.8 Mpix)

8E8-VU9Fluorite : CaF2

Grants Mills, Cumberland, Providence Co., Rhode Island, USA

Dimensions: 7.0 cm x 4.0 cm x 3.5 cm

Massive purple fluorite in quartz. Field collected by Gene Bearss in 1976.
Copyright: © 2018 Peter Cristofono      Photo ID: 874666     Uploaded by: Peter Cristofono   View Count: 15   Approval status: Public galleries    Type: Photo - 2563 x 1822 pixels (4.7 Mpix)

HHG-EU7Chalcopyrite : CuFeS2

Multiple photos available
Chelmsford Lime Quarries, Chelmsford, Middlesex Co., Massachusetts, USA

Field of View: 2.3 mm

Micro-crystals and grains of chalcopyrite are uncommon at this locality, but much easier to spot when colorfully tarnished. See child photo for analytical data (EDS).
Copyright: © 2018 Peter Cristofono      Photo ID: 870575     Uploaded by: Peter Cristofono   View Count: 15   Approval status: Public galleries    Type: Photo - 902 x 748 pixels (0.7 Mpix)

Iron Miners

Sellers Mine, Mesabi Range, St. Louis Co., Minnesota, USA

Drillers and blasters at the Sellers mine. early 20th century postcard.
Photo ID: 870520     Uploaded by: Peter Cristofono   View Count: 31   Approval status: Public galleries    Type: Photo - 1522 x 975 pixels (1.5 Mpix)

Portland-Dow Mining Co. Mine

Portland-Dow Mining Company Mine, Rollinsville, Gilpin Co., Colorado, USA

Early 20th-century postcard with three views of the mine.
Photo ID: 870512     Uploaded by: Peter Cristofono   View Count: 14   Approval status: Public galleries    Type: Photo - 632 x 998 pixels (0.6 Mpix)

Inkmargue Mine

Inkmargue group, Grass Valley, Grass Valley District, Nevada Co., California, USA

Old postcard view. Postcard mailed in 1905.
Photo ID: 870506     Uploaded by: Peter Cristofono   View Count: 9   Approval status: Public galleries    Type: Photo - 1312 x 760 pixels (1.0 Mpix)

P6P-HMNAlmandine : Fe2+3Al2(SiO4)3, Muscovite : KAl2(AlSi3O10)(OH)2

Simpson Quarry, South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA

Field of View: 4.2 mm

Orange-red almandine (visual ID) in muscovite.
Copyright: © 2018 Peter Cristofono      Photo ID: 866898     Uploaded by: Peter Cristofono   View Count: 20   Approval status: Public galleries    Type: Photo - 850 x 799 pixels (0.7 Mpix)
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