Pierrepont, St Lawrence Co., New York, USA

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Calcite : CaCO₃, Pyrite : FeS₂
	ZCA Pierrepont Mine, Pierrepont, St Lawrence Co., New York, USA Colorless scalenohedral calcite crystal 18 mm long with scattered .5 mm pyrite crystals on the surface. Overall size of mineral specimen: 28x17x16 mm. Size of individual crystals: 18 mm.
© 2001 John H. Betts	Photo ID: 1500 View Count: 409
Meionite : Ca₄[CO₃\|(Al₂Si₂O₈)₃]
	Pierrepont, St Lawrence Co., New York, USA New York State Museum, specimen no. 20540. Ex- Robert Rosenblatt, Rocko Minerals. Yellow fluorescence in SW & LW ultraviolet light. P. Cristofono photo.
© 2008 Peter Cristofono	Photo ID: 164065 View Count: 82
Phlogopite : KMg₃[(OH,F)₂\|AlSi₃O₁₀]
	Pierrepont, St Lawrence Co., New York, USA 43 mm pseudohexagonal crystal. P. Cristofono specimen and photo.
© 2007 Peter Cristofono	Photo ID: 99469 View Count: 160
Sphalerite : (Zn,Fe²⁺)S, Magnetite : Fe²⁺Fe³⁺₂O₄
	ZCA Pierrepont Mine, Pierrepont, St Lawrence Co., New York, USA Gemmy yellow sphalerite on dark magnetite matrix. Though the sphalerite is fully crystalline, I believe these are cleavage faces. The sphalerite is very transparent, and this quality is very uncommon. Overall size of mineral specimen: 4.5x3.5x3 cm. Size of individual crystals: 1-2 cm.
© 2001 John H. Betts	Photo ID: 566 View Count: 456
Sphalerite : (Zn,Fe²⁺)S
	ZCA Pierrepont Mine, Pierrepont, St Lawrence Co., New York, USA Small group of crystals 2.3cm across. Photographed by, and in the collection of, Karl Volkman
© Karl Volkman	Photo ID: 8735 View Count: 375
Sphalerite : (Zn,Fe²⁺)S, Magnetite : Fe²⁺Fe³⁺₂O₄
	ZCA Pierrepont Mine, Pierrepont, St Lawrence Co., New York, USA SUPER GEMMY and LUSTROUS, yellow sphalerite crystals to 1.0 cm aesthetically set atop magnetite matrix from the famous Pierrepont Mine in New York. An edge bruise on the termination of the large crystal is on the back and is out of sight. RARE material from finds in the late 90s. Hard as heck to get today, espeically in combo pieces like this! ...
© Rob Lavinsky	Photo ID: 38166 View Count: 239
Uvite : [Ca][(Mg,Fe²⁺)₃][MgAl₅][(OH)₃\|F\|(BO₃)₃\|Si₆O₁₈]
	Power's Farm (Bower Powers farm; Ryland Crary farm), Pierrepont, St Lawrence Co., New York, USA Several intergrown black crystals of uvite tourmaline mixed with a few milky quartz crystals. The uvite tourmalines are undamaged, very lustrous and well formed. Overall size of mineral specimen: 7x5x4 cm. Size of individual crystals: 5-15 mm.
© 2002 John H. Betts	Photo ID: 3916 View Count: 676
Uvite : [Ca][(Mg,Fe²⁺)₃][MgAl₅][(OH)₃\|F\|(BO₃)₃\|Si₆O₁₈]
	Power's Farm (Bower Powers farm; Ryland Crary farm), Pierrepont, St Lawrence Co., New York, USA Lustrous black single crystal of uvite tourmaline without matrix. The crystal has minor edge wear, but is terminated including secondary faces. Good crystal for the locality. Overall size of mineral specimen: 25x25x25 mm. Size of individual crystals: 25 mm.
© 2002 John H. Betts	Photo ID: 6150 View Count: 470
Uvite : [Ca][(Mg,Fe²⁺)₃][MgAl₅][(OH)₃\|F\|(BO₃)₃\|Si₆O₁₈]
	Power's Farm (Bower Powers farm; Ryland Crary farm), Pierrepont, St Lawrence Co., New York, USA Single crystal of lustrous black uvite tourmaline fully crystallized on all sides except a small attachment point where the matrix was, now removed. Overall size of mineral specimen: 18x15x12 mm. Size of individual crystals: 18 mm.
© 2001 John H. Betts	Photo ID: 3279 View Count: 430
Uvite : [Ca][(Mg,Fe²⁺)₃][MgAl₅][(OH)₃\|F\|(BO₃)₃\|Si₆O₁₈], Tourmaline : AD₃G₆(BO₃)₃[T₆O₁₈]Y₃Z
	Pierrepont, St Lawrence Co., New York, USA Another very hard-to-find old piece from the Hauck Collection - a big, sharp compound crystal of unite tourmaline from New York. There are some rough spots on one end of the crystal, but as you can see, it has a fine display face, with high luster and beautiful stepped form. 3.4 x 2.9 x 2.5cm
© Rob Lavinsky	Photo ID: 46545 View Count: 242