Plumas Co., California, USA

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Albite : Na[AlSi₃O₈]
	M. T. pit No. 1, Thompson Peak, Plumas Co., California, USA Albite crystals (to 1.5 x 1 cm)in parallel grouping 6.3 x 5.6 cm.
© Van King	Photo ID: 218187 View Count: 72
Axinite-(Fe) : Ca₂Fe²⁺Al₂[OH\|BSi₄O₁₅], Stilbite
	Genessee Valley, Plumas Co., California, USA Axinite crystal cluster with a few small cream colored stilbite crystals growing on it. Specimen is from the collection of Al McGuinness 1974. Scale at bottom of image is an inch with a rule at one cm.
	Photo ID: 218033 View Count: 29
Axinite Group
	Plumas Co., California, USA 3 mm transparent crystal. Ex- Neil Wintringham collection, no. 00-254. Label says : Axinite xls - Indian Creek, Plumas Co. - Calif." P. Cristofono specimen and photo.
© 2009 Peter Cristofono	Photo ID: 246124 View Count: 18
Cornwallite : Cu₅[(OH)₂\|AsO₄]₂
	Murdock Mine, Spring Creek area, Last Chance District, Plumas Co., California, USA A 4.9 by 3.3 cms specimen. JSS self collected specimen and photograph.
© JSS	Photo ID: 81353 View Count: 176
Gold : Au
	New Greenville, Plumas Co., California, USA Gold Nugget, 82oz. Specimen is in the collection of the Smithsonian Institute, Washington DC, USA. (1973}
	Photo ID: 241668 View Count: 42
Lindgrenite : Cu₃[OH\|MoO₄]₂
	Lodi No. 4 Mine (Lodi No. 4 claim), Spring Creek area, Last Chance District, Plumas Co., California, USA Monoclinic crystals of lindgrenite associated with molybdenite, brochantite and chalcopyrite. Field of view, 0.5mm x 0.5mm. Collected by Dick Thomssen. Brent Thorne specimen and photograph.
© Brent Thorne	Photo ID: 66545 View Count: 265
Quartz (Var: Smoky Quartz) : SiO₂, Schorl : [Na][Fe²⁺₃][Al₆][(OH)₃\|OH\|(BO₃)₃\|Si₆O₁₈], Muscovite : KAl₂[(OH)₂\|AlSi₃O₁₀]
	Plumas Co., California, USA 5.1 x 4.5 x 3.0 cm. An old-time combination specimen from Plumas County, which at the Grizzly Mine and other localities has a pretty strong record of producing good smoky quartz specimens. It is the combination here which is so interesting: the smoky quartzes are intergrown with balls of muscovite mica and radiating crystals of schorl tourmaline. ...
© Rob Lavinsky	Photo ID: 209837 View Count: 50
Tridymite : SiO₂
	Portola, Plumas Co., California, USA Tridymite crystals from near Portola. View is 4 mm across. P. Cristofono specimen and photo.
© 2006 Peter Cristofono	Photo ID: 58224 View Count: 239
Vesuvianite : Ca₁₀(Mg,Fe)₂Al₄Si₉O₃₄(OH)₄
	Portola, Plumas Co., California, USA Green to greenish-brown vesuvianite crystals up to 5.2 cm across. Specimen size 13.2 x 9.4 x 6.5 cm. See two other images. Christian Bracke Collection.
© Christian Bracke	Photo ID: 180946 View Count: 108
Vesuvianite : Ca₁₀(Mg,Fe)₂Al₄Si₉O₃₄(OH)₄
	Portola, Plumas Co., California, USA 9.3 x 6.4 x 5.1 cm. Huge, lustrous, partially gemmy, variegated brown vesuvianite crystals comprise this showy and excellent specimen from the well-known California locality of Portola in Plumas County. The crystals reach 6.7 cm.
© Rob Lavinsky	Photo ID: 181676 View Count: 57