| Locality type: | Dome |
| Classification |
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| Species: | Astrophyllite |
| Formula: | K2NaFe72+Ti2[Si4O12]2O2(OH)4F |
| Comments: | Purchased in April 2001 at "Spring Show of the Rockies" in Denver, Colorado, USA.
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| Habit: | Blades to 15cm |
| Quality for species: | Excellent - world class for species or very significant. (!!) |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals: |
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| Associates: | Prosopite
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| Associated Minerals Based on Photo Data: |
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| Quartz | 15 |
| Zircon | 7 |
| - var Cyrtolite | 4 |
| Pegmatite | 3 |
| Murataite-(Y) | 2 |
| Riebeckite | 2 |
| Microcline | 1 |
| Rutile | 1 |
| Fluorite | 1 |
| Thorite | 1 |
| Data |
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| Mineral Data: | Click here to view Astrophyllite data |
| Locality Data: | Click here to view St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA |
| Photo Gallery | View Gallery (23 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 28519 |
| Long-form Identifier: | 1:3:28519:7 |
| GUID (UUID V4): | 0 |
| Localities for Astrophyllite in this Region |
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| Eureka Tunnel (1-15 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA |
| Unnamed pegmatite, St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA |
| Nearest other occurrences of Astrophyllite |
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| 0.1km (0.0 miles) | ⓘCheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA |
| 0.8km (0.5 miles) | ⓘEureka Tunnel (1-15 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA |
| 2.0km (1.2 miles) | ⓘHillside Park claims, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA |
| 2.2km (1.4 miles) | ⓘStove Mountain (Cookstove Mountain), El Paso County, Colorado, USA |
| 2.8km (1.7 miles) | ⓘRosa No. 1 trench, Mount Rosa, El Paso County, Colorado, USA |
| 3.2km (2.0 miles) | ⓘMount Rosa, El Paso County, Colorado, USA |
| 3.3km (2.1 miles) | ⓘStove Mountain Mineral Locality (Cook Stove Mountain Mineral Locality), Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA |
| References |
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Palache, Charles; Berman, Harry; Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons. Adams, John W., Botinelly, Theodore, Sharp, W. N., Robinson, and Keith (1974) Murataite, a new complex oxide from El Paso County, Colorado. American Mineralogist, 59 (1-2) 172-176 |
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St Peters Dome, Cheyenne Mining District, El Paso County, Colorado, USA