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Abe Lincoln Mine | |
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Abe Lincoln Mine, Cripple Creek District, Teller Co., Colorado, USA Early 20th century postcard. |
| Photo ID: 228378 View Count: 19 | |
Aberdeen Quarry, 1912 | |
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Aberdeen Quarry, Gunnison District, Gunnison Co., Colorado, USA Aberdeen granite quarry near South Beaver Creek. October 8, 1912. Photo courtesy of USGS. |
| Photo ID: 205177 View Count: 38 | |
Adelaide Mine group looking West to Leadville | |
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Adelaide Mine, Iron Hill, Leadville, Leadville District, Lake Co., Colorado, USA Picture of my dad at the Adelaide Mine up 5th street just outside Leadville (in the background). |
| © Colorado HD | Photo ID: 185075 View Count: 100 |
Adit | |
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Panco Manganese Deposit, Snowmass Area, Pitkin Co., Colorado, USA This mine is the only known occurrence of braunite in Colorado. It was worked in the 1940's. This deposit is only 15 miles from my home. Making for an easy outing. Photo; Rudy Bolona, Feb. 28, 2009. |
| Photo ID: 215269 View Count: 60 | |
Aeschynite-(Y) In-Situ | |
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Clora May Mine (Mina Blanca; Clara May Lode), Trout Creek Pass pegmatite District, Buena Vista, Chaffee Co., Colorado, USA A 25 cm mass of crystalline, metamict Aeschynite-(Y), occurring in a replacement zone of albite and biotite. This mine has produced very large samples of this mineral. I have a 5 kg specimen in my collection! Xenotime-(Y) also occurs here, but is much more rare. Phot; Rudy Bolona; July 4, 2008. |
| Photo ID: 173071 View Count: 105 | |
Ajax Mine, ca. 1910 | |
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Ajax Mine, Cripple Creek District, Teller Co., Colorado, USA Old postcard view. |
| Photo ID: 209014 View Count: 36 | |
Albite Replacement Zone | |
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Yard Mine, Trout Creek Pass Pegmatite District, Buena Vista, Chaffee Co., Colorado, USA This is where the rare-earth minerals occur. Phot; Rudy Bolona, July 4, 2008. |
| Photo ID: 173294 View Count: 97 | |
Anchoria Leland Mine | |
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Anchoria Leland Mine, Cripple Creek District, Teller Co., Colorado, USA Old postcard view, early 20th century, pre-1916. |
| Photo ID: 225267 View Count: 20 | |
Another View | |
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Mica Lode mine (Mica Hill Mine), Eight Mile Park pegmatite District, Fremont Co., Colorado, USA The old records show that over half a ton of columbite was mined here. Certainly the largest single deposit of this mineral in Colorado. Photo; Rudy Bolona, June 10, 2009. |
| Photo ID: 236004 View Count: 29 | |
Arapahoe Peaks ca. 1911 | |
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Arapahoe Peaks, Larimer Co., Colorado, USA Old postcard with a 1911 postmark. |
| Photo ID: 267001 View Count: 9 | |
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