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Beecher Lode, Custer, Custer District, Custer Co., South Dakota, USA
Detailed Mineral List:
| Albite | ||
| Formula: | NaAlSi3O8 | |
| Reference: | R&M 75:3 pp 156-169 | |
| Localities: | Recorded from at least 2 other localities in this region. | |
| Albite var: Cleavelandite | ||
| Reference: | U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| Amblygonite | ||
| Formula: | LiAl(PO4)F | |
| Reference: | R&M 75:3 pp 156-169; Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 32 (Table A-1). | |
| Andalusite | ||
| Formula: | Al2(SiO4)O | |
| Reference: | R&M 75:3 pp 156-169 | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| 'Apatite' | ||
| Locality: | Beecher No. 3, Beecher Lode, Custer, Custer District, Custer Co., South Dakota, USA | |
| Beryl | ||
| Formula: | Be3Al2(Si6O18) | |
| Reference: | R&M 75:3 pp 156-169; Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 32 (Table A-1). | |
| Localities: | Recorded from at least 2 other localities in this region. | |
| Cassiterite | ||
| Formula: | SnO2 | |
| Reference: | R&M 75:3 pp 156-169; Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 32 (Table A-1). | |
| Columbite | ||
| Formula: | (Fe,Mn)(Nb,Ta)2O6 | |
| Localities: | Beecher Lode Bond Claim (Beecher No. 1; Bond Lode), Beecher Lode, Custer, Custer District, Custer Co., South Dakota, USA Beecher No. 3, Beecher Lode, Custer, Custer District, Custer Co., South Dakota, USA | |
| 'Columbite-Tantalite' | ||
| Reference: | R&M 75:3 pp 156-169; Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 32 (Table A-1). | |
| Elbaite | ||
| Formula: | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) | |
| Reference: | R&M 75:3 pp 156-169 | |
| Fluorapatite | ||
| Formula: | Ca5(PO4)3F | |
| Reference: | R&M 75:3 pp 156-169 | |
| Grunerite | ||
| Formula: | ☐{Fe2+2}{Fe2+5}(Si8O22)(OH)2 | |
| Locality: | Beecher No. 3, Beecher Lode, Custer, Custer District, Custer Co., South Dakota, USA | |
| Hematite | ||
| Formula: | Fe2O3 | |
| Locality: | Beecher No. 3, Beecher Lode, Custer, Custer District, Custer Co., South Dakota, USA | |
| Lepidolite | ||
| Reference: | R&M 75:3 pp 156-169; Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 32 (Table A-1). | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Limonite | ||
| Formula: | FeO(OH) · nH2O | |
| Locality: | Beecher No. 3, Beecher Lode, Custer, Custer District, Custer Co., South Dakota, USA | |
| Magnetite | ||
| Formula: | Fe2+Fe3+2O4 | |
| Locality: | Beecher No. 3, Beecher Lode, Custer, Custer District, Custer Co., South Dakota, USA | |
| 'Mica Group' | ||
| Locality: | Beecher No. 3, Beecher Lode, Custer, Custer District, Custer Co., South Dakota, USA | |
| Microcline | ||
| Formula: | KAlSi3O8 | |
| Reference: | R&M 75:3 pp 156-169 | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Muscovite | ||
| Formula: | KAl2(AlSi3O10)(OH)2 | |
| Reference: | R&M 75:3 pp 156-169 | |
| Localities: | Recorded from at least 2 other localities in this region. | |
| 'Perthite' | ||
| Locality: | Beecher No. 3, Beecher Lode, Custer, Custer District, Custer Co., South Dakota, USA | |
| Pyrrhotite | ||
| Formula: | Fe1-xS (x = 0 to 0.17) | |
| Reference: | R&M 75:3 pp 156-169 | |
| Quartz | ||
| Formula: | SiO2 | |
| Reference: | R&M 75:3 pp 156-169 | |
| Localities: | Recorded from at least 2 other localities in this region. | |
| Schorl | ||
| Formula: | Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH) | |
| Reference: | R&M 75:3 pp 156-169 | |
| Sillimanite | ||
| Formula: | Al2(SiO4)O | |
| Locality: | Beecher No. 3, Beecher Lode, Custer, Custer District, Custer Co., South Dakota, USA | |
| Spodumene | ||
| Formula: | LiAlSi2O6 | |
| Reference: | R&M 75:3 pp 156-169; Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 32 (Table A-1). | |
| Localities: | Recorded from at least 3 other localities in this region. | |
| Spodumene var: Kunzite | ||
| Reference: | R&M 75:3 pp 156-169 | |
| Staurolite | ||
| Formula: | (Fe2+,Mg,Zn)1.5-2Al9(SiO4)4O6(OH,O)2 | |
| Reference: | R&M 75:3 pp 156-169 | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| 'Tourmaline' | ||
| Formula: | A(D3)G6(T6O18)(BO3)3X3Z | |
| Locality: | Beecher No. 3, Beecher Lode, Custer, Custer District, Custer Co., South Dakota, USA | |
28 entries listed. 19 valid minerals.
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Locality Updated: Mt Wyatt area, Whitsunday Region, Queensland, AustraliaFrom Steve Sorrell, 19th May 2013 05:43:10