Boulder Hill Mine, Silver Glance Mining District (Wellington Mining District), Wellington Hills, Lyon County, Nevada, USAi
| Regional Level Types | |
|---|---|
| Boulder Hill Mine | Mine |
| Silver Glance Mining District (Wellington Mining District) | Mining District |
| Wellington Hills | Group of Hills |
| Lyon County | County |
| Nevada | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 41' 45'' North , 119° 20' 29'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Smith Valley | 1,603 (2011) | 9.8km |
| Smith | 1,033 (2006) | 11.7km |
| Topaz Ranch Estates | 1,501 (2017) | 14.5km |
| Topaz Lake | 157 (2011) | 17.6km |
| Coleville | 495 (2011) | 20.4km |
Other/historical names associated with this locality:
Nevada Bureau of Mines and Geology (NBMG) sample site No. 4281
A former Ag-F-W occurrence/mine located in sec. 30, T10N, R24E, MDM, 7.3 km (4.5 miles) SSE of Wellington, on National Forest land. Owned by Saga Exploration Company, Reno, Nevada.
A Ag deposit hosted in limestone. The mine is best known because of 2 large fluorite-bearing jasperoid masses that crop out on the slope above the mine about 1,200 feet SW and 2,200 feet to the S. The jasperoid masses cap the lower units. Associated rocks include Late Jurassic Diorite. Local rocks include shale, sandstone, volcanogenic clastic rocks, andesite, rhyolite, and locally thick carbonate units.
Local geologic features include local faulting.
Workings include surface and underground openings comprised of a shaft and adit with extensive road building and bulldozing above and to the SW of the mine. Several old buildings still stand at the mine.
Production was a small amount of silver.
Formerly, it was located in Douglas County. After the county lines were corrected it is now located in Lyon County. See NBMG OPEN-FILE REPORT 90-1, p.231:
"All of this district was formerly in Douglas County, but adjustments to the county line left only the mines in the Pine Nut Range in Douglas County. The county line passes along the east flanks of Taylor Hill and some of the prospects on the lower parts of the hill, east of the line, are in Lyon County. To the south, the county line passes west of the Boulder Hill mine area and those mines too are in Lyon County."
https://americanpacificmining.com/wp-content/uploads/2022/10/UNIVERSITY-OF-NEVADA-RENO_1990-01.pdf
Note: Fluorite specimens from Boulder Hill have been damaged, with the luster being affected when soaked in hydrochloric acid (HCL). It's advised to test chip samples in ''cleaning'' products before proceeding further with high-quality mineral specimens.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
15 valid minerals.
Rock Types Recorded
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Baryte Formula: BaSO4 |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Corkite Formula: PbFe3+3(PO4)(SO4)(OH)6 |
| ⓘ Coronadite Formula: Pb(Mn4+6Mn3+2)O16 |
| ⓘ Creedite Formula: Ca3Al2(SO4)(OH)2F8 · 2H2O |
| ⓘ Fluorapatite Formula: Ca5(PO4)3F Habit: hexagonal prisms up to 0.5mm width and 1 mm length Colour: clear, gemmy yellow |
| ⓘ Fluorite Formula: CaF2 |
| ⓘ Gearksutite Formula: Ca[Al(F,OH)5(H2O)] |
| ⓘ Hemimorphite Formula: Zn4Si2O7(OH)2 · H2O |
| ⓘ Jarosite Formula: KFe3+3(SO4)2(OH)6 Habit: microscopic balls on fluorite Colour: sparkly yellow |
| ⓘ Pararealgar Formula: As4S4 |
| ⓘ Phosphosiderite Formula: FePO4 · 2H2O Habit: microscopic balls on baryte Colour: pinkish white References: |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Realgar Formula: As4S4 |
| ⓘ Strengite Formula: FePO4 · 2H2O Habit: sparkly microscopic balls on baryte Colour: pinkish white References: |
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Realgar | 2.FA.15a | As4S4 |
| ⓘ | Pararealgar | 2.FA.15b | As4S4 |
| Group 3 - Halides | |||
| ⓘ | Fluorite | 3.AB.25 | CaF2 |
| ⓘ | Gearksutite | 3.CC.05 | Ca[Al(F,OH)5(H2O)] |
| ⓘ | Creedite | 3.CG.15 | Ca3Al2(SO4)(OH)2F8 · 2H2O |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Coronadite | 4.DK.05a | Pb(Mn4+6Mn3+2)O16 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| ⓘ | Jarosite | 7.BC.10 | KFe3+3(SO4)2(OH)6 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Corkite | 8.BL.05 | PbFe3+3(PO4)(SO4)(OH)6 |
| ⓘ | Fluorapatite | 8.BN.05 | Ca5(PO4)3F |
| ⓘ | Phosphosiderite | 8.CD.05 | FePO4 · 2H2O |
| ⓘ | Strengite | 8.CD.10 | FePO4 · 2H2O |
| Group 9 - Silicates | |||
| ⓘ | Hemimorphite | 9.BD.10 | Zn4Si2O7(OH)2 · H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Corkite | PbFe33+(PO4)(SO4)(OH)6 |
| H | ⓘ Creedite | Ca3Al2(SO4)(OH)2F8 · 2H2O |
| H | ⓘ Gearksutite | Ca[Al(F,OH)5(H2O)] |
| H | ⓘ Hemimorphite | Zn4Si2O7(OH)2 · H2O |
| H | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| H | ⓘ Phosphosiderite | FePO4 · 2H2O |
| H | ⓘ Strengite | FePO4 · 2H2O |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Corkite | PbFe33+(PO4)(SO4)(OH)6 |
| O | ⓘ Coronadite | Pb(Mn64+Mn23+)O16 |
| O | ⓘ Creedite | Ca3Al2(SO4)(OH)2F8 · 2H2O |
| O | ⓘ Fluorapatite | Ca5(PO4)3F |
| O | ⓘ Gearksutite | Ca[Al(F,OH)5(H2O)] |
| O | ⓘ Hemimorphite | Zn4Si2O7(OH)2 · H2O |
| O | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| O | ⓘ Phosphosiderite | FePO4 · 2H2O |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Strengite | FePO4 · 2H2O |
| F | Fluorine | |
| F | ⓘ Creedite | Ca3Al2(SO4)(OH)2F8 · 2H2O |
| F | ⓘ Fluorapatite | Ca5(PO4)3F |
| F | ⓘ Fluorite | CaF2 |
| F | ⓘ Gearksutite | Ca[Al(F,OH)5(H2O)] |
| Al | Aluminium | |
| Al | ⓘ Creedite | Ca3Al2(SO4)(OH)2F8 · 2H2O |
| Al | ⓘ Gearksutite | Ca[Al(F,OH)5(H2O)] |
| Si | Silicon | |
| Si | ⓘ Hemimorphite | Zn4Si2O7(OH)2 · H2O |
| Si | ⓘ Quartz | SiO2 |
| P | Phosphorus | |
| P | ⓘ Corkite | PbFe33+(PO4)(SO4)(OH)6 |
| P | ⓘ Fluorapatite | Ca5(PO4)3F |
| P | ⓘ Phosphosiderite | FePO4 · 2H2O |
| P | ⓘ Strengite | FePO4 · 2H2O |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Corkite | PbFe33+(PO4)(SO4)(OH)6 |
| S | ⓘ Creedite | Ca3Al2(SO4)(OH)2F8 · 2H2O |
| S | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| S | ⓘ Pararealgar | As4S4 |
| S | ⓘ Realgar | As4S4 |
| K | Potassium | |
| K | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Creedite | Ca3Al2(SO4)(OH)2F8 · 2H2O |
| Ca | ⓘ Fluorapatite | Ca5(PO4)3F |
| Ca | ⓘ Fluorite | CaF2 |
| Ca | ⓘ Gearksutite | Ca[Al(F,OH)5(H2O)] |
| Mn | Manganese | |
| Mn | ⓘ Coronadite | Pb(Mn64+Mn23+)O16 |
| Fe | Iron | |
| Fe | ⓘ Corkite | PbFe33+(PO4)(SO4)(OH)6 |
| Fe | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| Fe | ⓘ Phosphosiderite | FePO4 · 2H2O |
| Fe | ⓘ Strengite | FePO4 · 2H2O |
| Zn | Zinc | |
| Zn | ⓘ Hemimorphite | Zn4Si2O7(OH)2 · H2O |
| As | Arsenic | |
| As | ⓘ Pararealgar | As4S4 |
| As | ⓘ Realgar | As4S4 |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Pb | Lead | |
| Pb | ⓘ Corkite | PbFe33+(PO4)(SO4)(OH)6 |
| Pb | ⓘ Coronadite | Pb(Mn64+Mn23+)O16 |
Other Databases
| Link to USGS MRDS: | 10103623 |
|---|---|
| Link to USGS MRDS: | 10271338 |
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Northern Basin and RangeWide Rift
- Shoofly-Olds Ferry DomainDomain
- West Nevada Permian-Triassic BasinBasin
USA
- Sierra NevadaMountain Range
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Boulder Hill Mine, Silver Glance Mining District, Wellington Hills, Lyon County, Nevada, USA