Links
- More information: Publisher Index Page
- Download citation as: RIS | Dublin Core
Abstract
The paragenesis, textures, and chemical compositions of secondary hematite in regional potassic altered rhyolites, four IOA deposits, the sedimentary iron deposit at Pilot Knob and the Boss IOCG deposit in SE Missouri were determined and compared to primary magnetite from the IOA and IOCG deposits. Magnetite is composed of elements characteristics of mafic to intermediate intrusions whereas hematite is enriched in elements characteristic of felsic igneous rocks. These results suggest that magnetite formed from fluids discharged from mafic to intermediate composition intrusions. Hematite precipitated from fluids discharged from felsic intrusions or fluids that evolved in caldera lakes. Hematite in the sedimentary iron deposit at Pilot Knob formed in an evaporative caldera lake with fluid inputs from felsic intrusions.
Study Area
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Geochemistry of hematite veins in IOA-IOCG deposits of SE Missouri, USA: Relation to felsic magmatism and caldera lakes |
| Volume | 1 |
| Year Published | 2019 |
| Language | English |
| Publisher | Society for Geology Applied to Mineral Deposits (SGA) |
| Contributing office(s) | Central Mineral and Environmental Resources Science Center |
| Description | 4 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Conference publication |
| Larger Work Title | Life with Ore Deposits on Earth – 15th SGA Biennial Meeting 2019 |
| First page | 392 |
| Last page | 395 |
| Conference Title | 15th SGA Biennial Meeting |
| Conference Location | Glasgow, Scotland |
| Conference Date | August 27-30, 2019 |
| Country | United States |
| State | Missouri |
| Other Geospatial | St Francois Mountains |
| Google Analytic Metrics | Metrics page |