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Jacob's Geode Mine, Hamilton, Hancock County, Illinois, USAi
| Regional Level Types | |
|---|---|
| Jacob's Geode Mine | Mine |
| Hamilton | City |
| Hancock County | County |
| Illinois | State |
| USA | Country |
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Latitude & Longitude (WGS84):
40° 22' 42'' North , 91° 21' 17'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Hamilton | 2,853 (2017) | 2.4km |
| Keokuk | 10,609 (2017) | 3.3km |
| Warsaw | 1,551 (2017) | 7.1km |
| Alexandria | 153 (2017) | 8.8km |
| Elvaston | 161 (2017) | 9.1km |
Geode mine operated by Gary Jacobs.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
19 valid minerals.
Detailed Mineral List:
| ⓘ Ankerite Formula: Ca(Fe2+,Mg)(CO3)2 References: |
| ⓘ Baryte Formula: BaSO4 |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Celestine Formula: SrSO4 |
| ⓘ Dolomite Formula: CaMg(CO3)2 |
| ⓘ 'Feldspar Group' |
| ⓘ Goethite Formula: Fe3+O(OH) |
| ⓘ Gypsum Formula: CaSO4 · 2H2O References: |
| ⓘ Gypsum var. Selenite Formula: CaSO4 · 2H2O References: |
| ⓘ Halite Formula: NaCl |
| ⓘ Hollandite Formula: Ba(Mn4+6Mn3+2)O16 |
| ⓘ Kaolinite Formula: Al2(Si2O5)(OH)4 |
| ⓘ 'Limonite' References: https://www.mindat.org/photo-1352113.htmlIdentified by Noah Horwitz: Visual Identification |
| ⓘ Marcasite Formula: FeS2 References: |
| ⓘ 'Petroleum' |
| ⓘ 'Petroleum var. Bitumen' |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Quartz var. Chalcedony Formula: SiO2 |
| ⓘ Rhodochrosite Formula: MnCO3 |
| ⓘ Rhodochrosite var. Ponite Formula: (Mn,Fe)CO3 |
| ⓘ Rutile ? Formula: TiO2 |
| ⓘ Siderite Formula: FeCO3 |
| ⓘ Sphalerite Formula: ZnS References: |
| ⓘ Sylvite Formula: KCl |
| ⓘ 'Xenotime' ? |
| ⓘ Zircon ? Formula: Zr(SiO4) |
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Marcasite | 2.EB.10a | FeS2 |
| Group 3 - Halides | |||
| ⓘ | Halite | 3.AA.20 | NaCl |
| ⓘ | Sylvite | 3.AA.20 | KCl |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Quartz var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
| ⓘ | Rutile ? | 4.DB.05 | TiO2 |
| ⓘ | Hollandite | 4.DK.05a | Ba(Mn4+6Mn3+2)O16 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Rhodochrosite | 5.AB.05 | MnCO3 |
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| ⓘ | Rhodochrosite var. Ponite | 5.AB.05 | (Mn,Fe)CO3 |
| ⓘ | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| ⓘ | Celestine | 7.AD.35 | SrSO4 |
| ⓘ | Gypsum | 7.CD.40 | CaSO4 · 2H2O |
| ⓘ | var. Selenite | 7.CD.40 | CaSO4 · 2H2O |
| Group 9 - Silicates | |||
| ⓘ | Zircon ? | 9.AD.30 | Zr(SiO4) |
| ⓘ | Kaolinite | 9.ED.05 | Al2(Si2O5)(OH)4 |
| Unclassified | |||
| ⓘ | 'Feldspar Group' | - | |
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Xenotime' ? | - | |
| ⓘ | 'Petroleum var. Bitumen' | - | |
| ⓘ | '' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Gypsum | CaSO4 · 2H2O |
| H | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| H | ⓘ Gypsum var. Selenite | CaSO4 · 2H2O |
| C | Carbon | |
| C | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Dolomite | CaMg(CO3)2 |
| C | ⓘ Rhodochrosite | MnCO3 |
| C | ⓘ Siderite | FeCO3 |
| C | ⓘ Rhodochrosite var. Ponite | (Mn,Fe)CO3 |
| O | Oxygen | |
| O | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Celestine | SrSO4 |
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Gypsum | CaSO4 · 2H2O |
| O | ⓘ Hollandite | Ba(Mn64+Mn23+)O16 |
| O | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Rhodochrosite | MnCO3 |
| O | ⓘ Rutile | TiO2 |
| O | ⓘ Siderite | FeCO3 |
| O | ⓘ Zircon | Zr(SiO4) |
| O | ⓘ Gypsum var. Selenite | CaSO4 · 2H2O |
| O | ⓘ Rhodochrosite var. Ponite | (Mn,Fe)CO3 |
| Na | Sodium | |
| Na | ⓘ Halite | NaCl |
| Mg | Magnesium | |
| Mg | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Al | Aluminium | |
| Al | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Si | Silicon | |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Zircon | Zr(SiO4) |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Celestine | SrSO4 |
| S | ⓘ Gypsum | CaSO4 · 2H2O |
| S | ⓘ Marcasite | FeS2 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Gypsum var. Selenite | CaSO4 · 2H2O |
| Cl | Chlorine | |
| Cl | ⓘ Halite | NaCl |
| Cl | ⓘ Sylvite | KCl |
| K | Potassium | |
| K | ⓘ Sylvite | KCl |
| Ca | Calcium | |
| Ca | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
| Ca | ⓘ Gypsum | CaSO4 · 2H2O |
| Ca | ⓘ Gypsum var. Selenite | CaSO4 · 2H2O |
| Ti | Titanium | |
| Ti | ⓘ Rutile | TiO2 |
| Mn | Manganese | |
| Mn | ⓘ Hollandite | Ba(Mn64+Mn23+)O16 |
| Mn | ⓘ Rhodochrosite | MnCO3 |
| Mn | ⓘ Rhodochrosite var. Ponite | (Mn,Fe)CO3 |
| Fe | Iron | |
| Fe | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Marcasite | FeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Siderite | FeCO3 |
| Fe | ⓘ Rhodochrosite var. Ponite | (Mn,Fe)CO3 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Sr | Strontium | |
| Sr | ⓘ Celestine | SrSO4 |
| Zr | Zirconium | |
| Zr | ⓘ Zircon | Zr(SiO4) |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Ba | ⓘ Hollandite | Ba(Mn64+Mn23+)O16 |
Mindat Articles
Micro-mineralogy of a single Keokuk geode; how complex can it get? by Kevin ConroyOther Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Illinois BasinBasin
- Mazatzal DomainDomain
- Mazatzal TerraneVolcanic Arc
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Jacob's Geode Mine, Hamilton, Hancock County, Illinois, USA