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Diamond Acres (Hastings Farm), Fonda, Mohawk Township, Montgomery Co., New York, USA

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Marcasite : FeS2, Calcite : CaCO3

Diamond Acres (Hastings Farm), Fonda, Mohawk Township, Montgomery Co., New York, USA

Elongated marcasite crystals in calcite. Field of view is 12 mm across. Linda Frahm specimen. P. Cristofono photo.
 © 2008 Peter CristofonoPhoto ID: 147036    View Count: 139

Quartz (Var: Herkimer Diamond) : SiO2

Diamond Acres (Hastings Farm), Fonda, Mohawk Township, Montgomery Co., New York, USA

Rare matrix specimen of Herkimer Diamond variety quartz crystals (they easily pop off matrix during collecting). Overall size of mineral specimen: 33x20x17 mm. Size of individual crystals: 2-10 mm.
 © 2001 John H. BettsPhoto ID: 1506    View Count: 556

Quartz (Var: Herkimer Diamond) : SiO2

Diamond Acres (Hastings Farm), Fonda, Mohawk Township, Montgomery Co., New York, USA

Exquisite small cluster of water-clear quartz crystals (variety Herkimer Diamond) on matrix. Complete and undamaged. Matrix specimens are rare because the crystals commonly break off matrix during collecting. Overall size of mineral specimen: 2x1.5x1 cm. Size of individual crystals: 1 cm.
 © 2002 John H. BettsPhoto ID: 4148    View Count: 521

Quartz (Var: Herkimer Diamond) : SiO2

Diamond Acres (Hastings Farm), Fonda, Mohawk Township, Montgomery Co., New York, USA

Rare matrix specimen of Herkimer Diamond variety quartz crystals (they easily pop off matrix during collecting). Overall size of mineral specimen: 25x22x18 mm. Size of individual crystals: 2-12 mm.
 © 2001 John H. BettsPhoto ID: 1505    View Count: 452
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