Tony M deposit, Garfield County, Utah, USAi
| Regional Level Types | |
|---|---|
| Tony M deposit | Deposit |
| Garfield County | County |
| Utah | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
37° 41' 40'' North , 110° 41' 47'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
72888
Long-form identifier:
mindat:1:2:72888:0
GUID (UUID V4):
9c618475-9713-447d-a776-a9c7aa40be8c
Ref.: Bull. Minéral. , 1987, 110, pp. 131-144.
Located 80 km south of Hanksville.
Henry Mountains Mineral Belt, Henry basin synclinal (Colorado Plateau).
Sediment-hosted coffinite deposit in Salt Wash Member of Upper Jurassic Morrison Formation (fluviolacustrine sandstones and mudstones in a thick subsiding sequence).
Tabular V-U deposits rich in organic matter (plant debris) : 2-3 layers separated by V-rich layers (barren of U).
Un undetermined vanadium oxide fills pore spaces.
Coffinite is associated with V-rich chlorite (intergrowths), with pyrite replacing abundant undetermined Fe/Ti oxides and with detrital quartz.
Ore-body formed at a density-stratified solution interface between uranyl-ion bearing meteoritic slightly alkaline circulating water and a saline fluid (brine derived from sea water) locally reducing (presence of aqueous sulfides generated by bacterial metabolism of sulfates in the presence of organic matter).
The next phase was adsorption of U onto detrital minerals surface. Adsorption is related to a pH difference between the two fluids (clay-forming reactions depressed the pH of the saline fluid to less than neutral).
Adsorption facilitated reduction of uranyl to adsorbed U 5+ and insoluble U 4+.
The adsorbed reduced U bonded with aqueous silica (highly concentrated monomeric silica) to form coffinite.
Silica was carried by meteoritic waters (alteration of volcanic ashes increased the pH) and depolymerized by high salinity, decreased pH and aqueous Al.
Bonding of monomeric silica took place with U 5+, so coffinite precipitated instead of uraninite.
UPDATE 2024
IsoEnergy is in the proces of re-opening this mine. Further info at https://www.isoenergy.ca/portfolio/us/tony-m/
The coordinates are approximate
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Chlorite Group' Description: Vanadium-rich chlorite. References: |
| ⓘ Coffinite Formula: U(SiO4) · nH2O Description: Microcrystals on detrital quartz.
Intergrowths with V-bearing chlorite and smectite outlining pore spaces.
Associated with organic matter, pyrite, and titanium oxides.
References: |
| ⓘ Dolomite Formula: CaMg(CO3)2 Description: Sandstone cement. References: |
| ⓘ 'Leucoxene' References: |
| ⓘ Marcasite Formula: FeS2 Description: Rarer than pyrite. References: |
| ⓘ Pyrite Formula: FeS2 Description: Replaces Fe/Ti grains. References: |
| ⓘ Quartz Formula: SiO2 References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Marcasite | 2.EB.10a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| Group 9 - Silicates | |||
| ⓘ | Coffinite | 9.AD.30 | U(SiO4) · nH2O |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Leucoxene' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Coffinite | U(SiO4) · nH2O |
| C | Carbon | |
| C | ⓘ Dolomite | CaMg(CO3)2 |
| O | Oxygen | |
| O | ⓘ Coffinite | U(SiO4) · nH2O |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| O | ⓘ Quartz | SiO2 |
| Mg | Magnesium | |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Si | Silicon | |
| Si | ⓘ Coffinite | U(SiO4) · nH2O |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Marcasite | FeS2 |
| S | ⓘ Pyrite | FeS2 |
| Ca | Calcium | |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
| Fe | Iron | |
| Fe | ⓘ Marcasite | FeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| U | Uranium | |
| U | ⓘ Coffinite | U(SiO4) · nH2O |
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Chugar Group Area BasinBasin
- Great Plains DomainDomain
USA
- Colorado PlateauPlateau
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
