Sawtooth Batholith/Sawtooth Mts, Boise Co., Idaho, USA

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Bertrandite : Be₄[(OH)₂\|Si₂O₇], Quartz (Var: Smoky Quartz) : SiO₂
	Benedict Creek area (Devil's Den), Sawtooth Batholith/Sawtooth Mts, Boise Co., Idaho, USA A terminated smoky quartz crystal encrusted with small bertrandite crystals; note dark area near termination where beryl crystal once stood, now a partial hexagonal cast. Overall size of specimen 10.0 x 2.5 x 2.9 cm.; field of view shows 6.0 cm. of length. Found in the Benedict Creek area (Devil's Den).Self-collected.
© Wm. C. van Laer	Photo ID: 166763 View Count: 273
Bertrandite : Be₄[(OH)₂\|Si₂O₇], Microcline : K[AlSi₃O₈]
	Benedict Creek area (Devil's Den), Sawtooth Batholith/Sawtooth Mts, Boise Co., Idaho, USA A small, roughly hemispherical cluster of white bertrandite crystals, nestled in between crystals of pink microcline. From the Benedict Creek area (Devil's Den), Boise County, Idaho. Size of specimen is 7.0 x 5.0 x 4.8 cm. Self-collected.
© Wm. C. van Laer	Photo ID: 166963 View Count: 206
Bertrandite : Be₄[(OH)₂\|Si₂O₇], Quartz (Var: Smoky Quartz) : SiO₂
	Benedict Creek area (Devil's Den), Sawtooth Batholith/Sawtooth Mts, Boise Co., Idaho, USA A single, terminated smoky quartz crystal measuring 3.6 x 0.9 x 0.7 cm; completely encrusted with tiny bertrandite crystals. Everything found in this miarolitic cavity was similarly encrusted; no beryl remained. Found in the Benedict Creek area (Devil's Den). Self-collected.
© Wm. C. van Laer	Photo ID: 166718 View Count: 195
Bertrandite : Be₄[(OH)₂\|Si₂O₇]
	Benedict Creek area (Devil's Den), Sawtooth Batholith/Sawtooth Mts, Boise Co., Idaho, USA Small bertrandite crystals encrusting a matrix of cast from former beryl, mineral unknown. Found associated with smoky quartz; all material from this miarolitic cavity was encrusted with bertrandite. Overall size of specimen 4.5 x 2.5 x 2.5 cm.; field of view 3.0 x 2.0 cm. Found in the Benedict Creek area (Devil's Den). Self-collected.
© Wm. C. van Laer	Photo ID: 166762 View Count: 189
Beryl : Be₃Al₂Si₆O₁₈
	Sawtooth Batholith/Sawtooth Mts, Boise Co., Idaho, USA A 2.1cm tall complex floater crystal. Photographed by, and in the collection of, Karl Volkman.
© Karl Volkman 10/07	Photo ID: 131141 View Count: 129
Beryl (Var: Aquamarine) : Be₃Al₂Si₆O₁₈
	Ardeth Lake, Sawtooth Batholith/Sawtooth Mts, Boise Co., Idaho, USA Deep blue beryl variety aquamarine, found near Ardeth Lake; crystal exhibits typical etching for material from the Sawtooth Batholith. Size 2.5 x 1.0 x 0.8 cm. Self-collected.
© Wm. C. van Laer	Photo ID: 166721 View Count: 320
Beryl (Var: Aquamarine) : Be₃Al₂Si₆O₁₈, Albite : Na[AlSi₃O₈]
	Sawtooth Batholith/Sawtooth Mts, Boise Co., Idaho, USA A beautiful terminated aquamarine crystal on matrix of albite; collected by Geary Murdock and purportedly from his "Centerville" locality, which has now been disproven. This was one of the only matrix aquamarines he found at the site where his best aquas came from; once on a much larger matrix, I acquired this from Geary in Tuscon in 1984 and ... Mindat.org Photo of the Day - 23rd Dec 2008
© Wm. C. van Laer	Photo ID: 166742 View Count: 847
Beryl (Var: Aquamarine) : Be₃Al₂Si₆O₁₈
	Ardeth Lake, Sawtooth Batholith/Sawtooth Mts, Boise Co., Idaho, USA Large, etched aquamarine crystal, from a miarolitic cavity found north of Ardeth Lake, Boise County, Idaho in 1986. This was almost the only crystal left in the exposed pocket, found in two pieces. The rest of the pocket had been breached and the contents were distributed throughout the soil at the base of the granite outcrop (see photo ID:# ...
© Wm. C. van Laer	Photo ID: 198553 View Count: 176
Beryl (Var: Aquamarine) : Be₃Al₂Si₆O₁₈
	Sawtooth Batholith/Sawtooth Mts, Boise Co., Idaho, USA 1.7 x 1.5 x 1.4 cm. This more than likely the finest color Aquamarine from North America. Some of this material was mined by Richard Kosnar in the late 1970''s and produced some of the finest color Aquamarine in the world. Most of these crystals are not gem quality, but this crystal is approximately 85% gem clarity. This crystal is a fine, sharp, ...
© Rob Lavinsky	Photo ID: 119751 View Count: 137
Beryl (Var: Aquamarine) : Be₃Al₂Si₆O₁₈
	Sawtooth Batholith/Sawtooth Mts, Boise Co., Idaho, USA 2.7 x 2.4 x 2.1 cm. This more than likely the finest color Aquamarine from North America. Some of this material was mined by Richard Kosnar in the late 1970''s and produced some of the finest color Aquamarine in the world. Most of these crystals are not gem quality, but this crystal is approximately 50% gem clarity. This crystal is an attractive ...
© Rob Lavinsky	Photo ID: 132062 View Count: 102