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Durham, Lewis County, Missouri, USAi
| Regional Level Types | |
|---|---|
| Durham | Occurrence |
| Lewis County | County |
| Missouri | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 59' North , 91° 37' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
An outcrop of the geode-bearing Mississippian age Keokuk formation. Geodes at this site have been found up to 25 cm in diameter and are usually lined with colorless quartz or chalcedony, with a variety of accessory minerals.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Aragonite Formula: CaCO3 |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Goethite Formula: Fe3+O(OH) |
| ⓘ Honessite Formula: (Ni1-xFe3+x)(OH)2[SO4]x/2 · nH2O Habit: Granular to earth aggragates replacing millerite crystals enclosed in calcite Colour: olive green Fluorescence: None observed Description: Found in two geodes which consisted of thick chalcedony shells completely filled with calcite. |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
| ⓘ Millerite Formula: NiS |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ✪ Sphalerite Formula: ZnS Habit: Rude, often distorted tetrahedral crystals Colour: Submetallic black Fluorescence: None observed Description: Usually one large single crystal, up to 4 cm on edge is found in each geode. |
| ✪ Szomolnokite Formula: FeSO4 · H2O Habit: 1 to 2 mm diameter rounded crystals or cavernous elongated bipyramidal crystals Colour: bright yellow Description: Szomolnokite is known from this locality from one 20 cm diameter geode where it occurred in shells of goethite that made up the former surface of 2 to 3 mm oxidized pyrite crystals. Szomolnokite crystals also occurred on the surrounding colorless quartz crystals. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Millerite | 2.CC.20 | NiS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Aragonite | 5.AB.15 | CaCO3 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Szomolnokite | 7.CB.05 | FeSO4 · H2O |
| ⓘ | Honessite | 7.DD.35 | (Ni1-xFe3+x)(OH)2[SO4]x/2 · nH2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Honessite | (Ni1-xFex3+)(OH)2[SO4]x/2 · nH2O |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| H | ⓘ Szomolnokite | FeSO4 · H2O |
| C | Carbon | |
| C | ⓘ Aragonite | CaCO3 |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Aragonite | CaCO3 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Honessite | (Ni1-xFex3+)(OH)2[SO4]x/2 · nH2O |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Szomolnokite | FeSO4 · H2O |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Honessite | (Ni1-xFex3+)(OH)2[SO4]x/2 · nH2O |
| S | ⓘ Millerite | NiS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Szomolnokite | FeSO4 · H2O |
| Ca | Calcium | |
| Ca | ⓘ Aragonite | CaCO3 |
| Ca | ⓘ Calcite | CaCO3 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Honessite | (Ni1-xFex3+)(OH)2[SO4]x/2 · nH2O |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Szomolnokite | FeSO4 · H2O |
| Ni | Nickel | |
| Ni | ⓘ Honessite | (Ni1-xFex3+)(OH)2[SO4]x/2 · nH2O |
| Ni | ⓘ Millerite | NiS |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Mazatzal DomainDomain
- Mazatzal TerraneVolcanic Arc
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