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Franklin Co., North Carolina, USA
Detailed Mineral List:
| Actinolite var: Smaragdite | ||
| Formula: | Ca2(Mg,Fe2+)5Si8O22(OH)2 | |
| Reference: | [www.johnbetts-fineminerals.com] | |
| 'Asbestos' | ||
| Reference: | Genth,F.A.,1891,The Minerals Of North Carolina;USGS Bulletion No.74 | |
| Beryl | ||
| Formula: | Be3Al2(Si6O18) | |
| Locality: | Alston Mine, Franklin Co., North Carolina, USA | |
| 'Biotite' | ||
| Reference: | J. Robert Butler,1984,Map showing Paleozoic Metamorphic Facies,NCGS | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Chalcopyrite | ||
| Formula: | CuFeS2 | |
| Locality: | Portis Mine (C. M. Wright Mine), Franklin Co., North Carolina, USA | |
| Corundum var: Ruby | ||
| Formula: | Al2O3 | |
| Reference: | [www.johnbetts-fineminerals.com] | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Corundum var: Sapphire |  | |
| Formula: | Al2O3 | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Photo: Sapphire from Franklin Co., North Carolina, USA | ||
| Diamond | ||
| Formula: | C | |
| Locality: | Portis Mine (C. M. Wright Mine), Franklin Co., North Carolina, USA | |
| Epidote | ||
| Formula: | {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) | |
| Locality: | Portis Mine (C. M. Wright Mine), Franklin Co., North Carolina, USA | |
| Gold | ||
| Formula: | Au | |
| Locality: | Portis Mine (C. M. Wright Mine), Franklin Co., North Carolina, USA | |
| 'Halloysite' | ||
| Formula: | Al2(Si2O5)(OH)4 | |
| Reference: | Genth,F.A (1891) The Minerals Of North Carolina;USGS Bulletion No.74 | |
| Ilmenite | ||
| Formula: | Fe2+TiO3 | |
| Locality: | Portis Mine (C. M. Wright Mine), Franklin Co., North Carolina, USA | |
| Kaolinite | ||
| Formula: | Al2(Si2O5)(OH)4 | |
| Reference: | Genth,F.A (1891) The Minerals Of North Carolina;USGS Bulletion No.74 | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| 'K Feldspar' | ||
| Localities: | Gully Mine, Franklin Co., North Carolina, USA Van Alston Deposit, Franklin Co., North Carolina, USA | |
| Kyanite | ||
| Formula: | Al2(SiO4)O | |
| Reference: | J.Robert Butler,1984,Map showing Paleozoic Metamorphic Facies, NCGS | |
| Magnetite | ||
| Formula: | Fe2+Fe3+2O4 | |
| Locality: | Portis Mine (C. M. Wright Mine), Franklin Co., North Carolina, USA | |
| Muscovite var: Sericite | ||
| Locality: | Portis Mine (C. M. Wright Mine), Franklin Co., North Carolina, USA | |
| 'Perthite' | ||
| Reference: | Gems and Minerals of America-Jay Ellis Ransom-1974 | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Pyrite | ||
| Formula: | FeS2 | |
| Locality: | Portis Mine (C. M. Wright Mine), Franklin Co., North Carolina, USA | |
| Pyrrhotite | ||
| Formula: | Fe1-xS (x = 0 to 0.17) | |
| Locality: | Portis Mine (C. M. Wright Mine), Franklin Co., North Carolina, USA | |
| Quartz | ||
| Formula: | SiO2 | |
| Reference: | Genth,F.A.,1891,The Minerals Of North Carolina;USGS Bulletion No.74 | |
| Localities: | Recorded from at least 4 other localities in this region. | |
| Quartz var: Amethyst | ||
| Formula: | SiO2 | |
| Reference: | Pratt,Joseph Hyde,1933,Gems and Gem Minerals of North Carolina: American Mineralogist,Vol.18,No.4,April,1933 | |
| Rutile | ||
| Formula: | TiO2 | |
| Locality: | Portis Mine (C. M. Wright Mine), Franklin Co., North Carolina, USA | |
| Staurolite | ||
| Formula: | (Fe2+,Mg,Zn)1.5-2Al9(SiO4)4O6(OH,O)2 | |
| Reference: | J.Robert Butler,1984, Map showing Paleozoic Metamorphic Facies,NCGS | |
| 'Tourmaline' | ||
| Formula: | A(D3)G6(T6O18)(BO3)3X3Z | |
| Reference: | Gems and Minerals of America-Jay Ellis Ransom-1974 | |
25 entries listed. 14 valid minerals.
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