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Muscovite from
Robinson Gulch pegmatite, Clear Creek pegmatite Province, Jefferson Co., Colorado, USA

Mineral Species
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Description
Quality of samples:not specified / average specimens
Confirmation
Validity:Believed Valid
References
References:U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; USGS Prof. Paper 227
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Robinson Gulch pegmatite, Clear Creek pegmatite Province, Jefferson Co., Colorado, USA
Nearest other occurrences of Muscovite
2.1km (1.3 miles) A Guy Hill pegmatite area, Jefferson Co., Colorado, USA
3.9km (2.4 miles) B Centennial Cone pegmatite (K. L. Green Ranch), Centennial Cone, Clear Creek pegmatite Province, Jefferson Co., Colorado, USA
4.0km (2.5 miles) C G. H. Buckman Ranch, Front Range, Jefferson Co., Colorado, USA
5.2km (3.2 miles) D Drew Hill Prospect (Drew Hill Pegmatites Nos. 1 and 2), Clear Creek pegmatite Province, Jefferson Co., Colorado, USA
5.7km (3.6 miles) E Roscoe Beryl Mine (Roscoe pegmatite), Clear Creek pegmatite Province, Jefferson Co., Colorado, USA
6.4km (4.0 miles) F Strang Pegmatite Occurrence (S. B. Strang Ralston Creek Pegmatite), Clear Creek Pegmatite Province, Jefferson Co., Colorado, USA
6.9km (4.3 miles) G Cressmans Gulch Mine (Cressmans Gulch pegmatite), Clear Creek pegmatite Province, Jefferson Co., Colorado, USA
7.0km (4.4 miles) H Ladwig Group (Ladwig No. 2; Ladwig No. 3; Claims: Ladwig No. 1), Ralston Buttes District, Jefferson Co., Colorado, USA
8.5km (5.3 miles) I Schwartzwalder Mine (Ralston Creek Mine), Ralston Buttes District, Jefferson Co., Colorado, USA
8.7km (5.4 miles) J German and Belcher, Quartz Hill, Central City District, Gilpin Co., Colorado, USA
9.0km (5.6 miles) K Ajax Mica Mine (Floyd Hill Mica Mine), Clear Creek Pegmatite Province, Clear Creek Co., Colorado, USA
11.3km (7.0 miles) L Laramie Formation, Golden, Golden District, Jefferson Co., Colorado, USA
12.0km (7.4 miles) M Grover Mine (Grover pegmatite; Windsor), Clear Creek Co., Colorado, USA
12.1km (7.5 miles) N Burroughs Mine (Traut-Rudin-Anderson Pegmatite; Sunrise Peak Mine), Clear Creek pegmatite Province, Jefferson Co., Colorado, USA
12.8km (7.9 miles) O Swede - Kerr Gulches Pegmatites, Clear Creek Pegmatite Province, Jefferson Co., Colorado, USA
14.3km (8.9 miles) P Seven Hills - Yetter Ranch Pegmatite Occurrence, Clear Creek Pegmatite Province, Jefferson Co., Colorado, USA
19.7km (12.2 miles) Q Bald Mountain pegmatite (Evans Ranch), Upper Bear Creek, Bald Mountain, Clear Creek Co., Colorado, USA
22.8km (14.1 miles) R Invincible (Baltimore; Brighton; Silver Link; Blackwood; Alpine; Roca; Brownell; Frelland; Lance; Mint; Mammoth; Belle Creole; Ariadne; Diamond Mt.; Miller; Cecil; Falcon; Harrisburg; C. M. Welch), Lamartine District, Clear Creek Co., Colorado, USA
24.5km (15.2 miles) S Cold Spring Mine, Boulder Co. Tungsten District, Boulder Co., Colorado, USA
24.6km (15.3 miles) T Murry Mine, Lawson District (Dumont District), Clear Creek Co., Colorado, USA
25.2km (15.7 miles) U Iowa Gulch Occurrence (Iowa Gulch Pegmatite), Jefferson Co., Colorado, USA
25.4km (15.8 miles) V Katie - Dorothy Mines, Sugarloaf District, Boulder Co., Colorado, USA
26.5km (16.5 miles) W Fenders - Magnotte Pegmatite Occurrence, Jefferson Co., Colorado, USA
27.1km (16.8 miles) X Enterprise Vein Occurrence, Eldora, Caribou District, Boulder Co., Colorado, USA
27.4km (17.0 miles) Y Bigger Mica Mine (Sweitzer Lode), Clear Creek pegmatite Province, Jefferson Co., Colorado, USA
27.7km (17.2 miles) Z Poorman Group, Gold Hill District, Boulder Co., Colorado, USA
27.9km (17.3 miles) 0 Grand Republic Occurrence, Gold Hill District, Boulder Co., Colorado, USA
28.2km (17.5 miles) 1 Boulder County Mine, Caribou District, Boulder Co., Colorado, USA
28.3km (17.6 miles) 2 Silver Mountain Occurrence, Silver Mountain, Upper Union District (Empire District), Clear Creek Co., Colorado, USA
28.4km (17.6 miles) 3 Gold Fissure, Silver Mountain, Upper Union District (Empire District), Clear Creek Co., Colorado, USA
28.5km (17.7 miles) 4 Gold Dirt, Silver Mountain, Upper Union District (Empire District), Clear Creek Co., Colorado, USA
29.5km (18.3 miles) 5 Copper Glance, Sunset, Boulder Co., Colorado, USA
29.5km (18.3 miles) 6 Ingram mine (Valley Forge Occurrence; Critic and Railroad Boy; Sunshine; Three Brothers; Atchison; Belle; Golden Eagle; Melvina; Baron; Richmond), Gold Hill District, Boulder Co., Colorado, USA
30.5km (19.0 miles) 7 Thomas - Union Lodes (Mica Mine), Jefferson Co., Colorado, USA
30.9km (19.2 miles) 8 Interocean Mine, Gold Hill District, Boulder Co., Colorado, USA
31.1km (19.3 miles) 9 Wilson beryl prospect, Gold Hill District, Boulder Co., Colorado, USA
Mineral and/or Locality  
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