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Tourmaline from
Grover Mine (Grover pegmatite; Windsor), Clear Creek Co., Colorado, USA

Mineral Species
Species:Tourmaline
Formula:A(D3)G6(T6O18)(BO3)3X3Z
Description
Quality of samples:not specified / average specimens
Confirmation
Validity:Believed Valid
References
References:Minerals of Colorado (1997) E.B. Eckels
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Grover Mine (Grover pegmatite; Windsor), Clear Creek Co., Colorado, USA
Nearest other occurrences of Tourmaline
3.6km (2.2 miles) A Ajax Mica Mine (Floyd Hill Mica Mine), Clear Creek Pegmatite Province, Clear Creek Co., Colorado, USA
6.4km (4.0 miles) B Hiwan Ranch, Clear Creek Pegmatite Province, Jefferson Co., Colorado, USA
12.0km (7.4 miles) C Robinson Gulch pegmatite, Clear Creek pegmatite Province, Jefferson Co., Colorado, USA
12.0km (7.5 miles) D Burroughs Mine (Traut-Rudin-Anderson Pegmatite; Sunrise Peak Mine), Clear Creek pegmatite Province, Jefferson Co., Colorado, USA
12.9km (8.0 miles) E Seven Hills - Yetter Ranch Pegmatite Occurrence, Clear Creek Pegmatite Province, Jefferson Co., Colorado, USA
13.7km (8.5 miles) F Guy Hill pegmatite area, Jefferson Co., Colorado, USA
14.4km (8.9 miles) G Fred Pierce Ranch (Ramstetter Quarry), Front Range, Jefferson Co., Colorado, USA
14.4km (8.9 miles) H G. H. Buckman Ranch, Front Range, Jefferson Co., Colorado, USA
17.0km (10.6 miles) I Drew Hill Prospect (Drew Hill Pegmatites Nos. 1 and 2), Clear Creek pegmatite Province, Jefferson Co., Colorado, USA
17.9km (11.1 miles) J Cressmans Gulch Mine (Cressmans Gulch pegmatite), Clear Creek pegmatite Province, Jefferson Co., Colorado, USA
20.4km (12.7 miles) K Schwartzwalder Mine (Ralston Creek Mine), Ralston Buttes District, Jefferson Co., Colorado, USA
25.2km (15.7 miles) L Iowa Gulch Occurrence (Iowa Gulch Pegmatite), Jefferson Co., Colorado, USA
26.3km (16.4 miles) M Fenders - Magnotte Pegmatite Occurrence, Jefferson Co., Colorado, USA
26.8km (16.6 miles) N Bigger Mica Mine (Sweitzer Lode), Clear Creek pegmatite Province, Jefferson Co., Colorado, USA
82.8km (51.5 miles) O Hyatt Ranch Mine (Hyatt Mine), Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA
92.3km (57.3 miles) P Buckhorn Mica Mine (Claim: Emerald Gem), Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA
94.9km (59.0 miles) Q Pan Claims, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA
108.4km (67.4 miles) R Crystal Park Area, Crystal Park, El Paso Co., Colorado, USA
116.5km (72.4 miles) S Dorothy O Claim, Cheyenne District (St. Peters Dome District), El Paso Co., Colorado, USA
134.3km (83.5 miles) T Midnight Mine, Aspen District (Roaring Fork District), Pitkin Co., Colorado, USA
134.7km (83.7 miles) U Sedalia Mine (Jackpot Adit; Adits Nos. 1-3; Dewey Adit; Sedalia Copper Mine), Sedalia District, Chaffee Co., Colorado, USA
137.1km (85.2 miles) V Consolidated Feldspar Corporation Mine (Feldspar Corporation Mine), Eight Mile Park pegmatite District, Fremont Co., Colorado, USA
139.0km (86.4 miles) W R. H. Magnuson Mine (Magnusson Crosscut), Eight Mile Park pegmatite District, Fremont Co., Colorado, USA
140.7km (87.4 miles) X Spikebuck Mine, McIntyre Hills Area, Fremont Co., Colorado, USA
141.1km (87.7 miles) Y Stockton Mine (Gertrude Vein), Cleora District, Chaffee Co., Colorado, USA
141.9km (88.2 miles) Z Snowmass Creek Mine, Snowmass Creek Area, Pitkin Co., Colorado, USA
142.5km (88.5 miles) 0 Gypse Queen Mine, Cleora District, Chaffee Co., Colorado, USA
148.7km (92.4 miles) 1 Royal Gorge Quarry, Fremont Co., Colorado, USA
149.5km (92.9 miles) 2 Horsepasture Pegmatites Occurrence, Lookout Mountain Area, Fremont Co., Colorado, USA
150.1km (93.3 miles) 3 Jim 3 Mine, Lookout Mountain Area, Fremont Co., Colorado, USA
150.6km (93.6 miles) 4 Ilmenite Pegmatite Occurrence (MRDS - 10010868), Lookout Mountain Area, Fremont Co., Colorado, USA
161.0km (100.0 miles) 5 Unnamed Uranium - Feldspar Mine (MRDS - 10013132), Marshall Pass District, Saguache Co., Colorado, USA
164.7km (102.3 miles) 6 Brown Derby No. 5 Mine, Brown Derby Mine, Quartz Creek Pegmatite District, Gunnison Co., Colorado, USA
178.7km (111.0 miles) 7 Mount Robinson Deposit (Cowan Knoll), Rosita District, Custer Co., Colorado, USA
178.9km (111.2 miles) 8 Platt Pegmatite Mine (Uranium King Mine; Platte mine), Big Creek pegmatite District, Carbon Co., Wyoming, USA
187.0km (116.2 miles) 9 Gunnison District Occurrence (W.C. Dillon; MS 10715), Gunnison District, Gunnison Co., Colorado, USA
Mineral and/or Locality  
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