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Black Beauty Opal Mine (WRT Black Beauty claim; BLM-NMC No. 865656), WRT Stonetree group ("Dominion Opal Mine"), Virgin Valley, Humboldt Co., Nevada, USAi
Regional Level Types
Black Beauty Opal Mine (WRT Black Beauty claim; BLM-NMC No. 865656)Mine
WRT Stonetree group ("Dominion Opal Mine")- not defined -
Virgin ValleyValley
Humboldt Co.County
NevadaState
USACountry

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Latitude & Longitude (WGS84): 41° 51' 33'' North , 119° 2' 26'' West
Latitude & Longitude (decimal): 41.85917,-119.04083
GeoHash:G#: 9r7q5hjp7
Locality type:Mine
Köppen climate type:Dsb : Warm, dry-summer continental climate


A precious opal occurrence/mine located in the northern half of nonstandard sec. 4, T45N, R26E, MDM, in Virgin Valley. Staked in 2004 by The Wentzell Revocable Trust as an in-place lode deposit. Part of the WRT Stonetree group of lode mining claims. Officially known as the WRT Black Beauty claim, BLM-NMC#865656. Sold by Alvin Wentzell Jr., to Thomas Schaefer, the current owner (2018).

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


1 valid mineral.

Detailed Mineral List:

'commodity:Gemstones'
Reference:  
Opal
Formula: SiO2 · nH2O
Reference: Christopher Wentzell collection.
Opal var: Black Opal
Formula: SiO2 · nH2O
Reference: Christopher Wentzell collection
Opal var: Precious Opal
Formula: SiO2 · nH2O
Reference: Christopher Wentzell collection.
Opal var: Wood Opal
Formula: SiO2 · nH2O
Reference: Wentzell Revocable Trust
'Petrified Wood'
Reference: Wentzell Revocable Trust

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Opal4.DA.10SiO2 · nH2O
var: Black Opal4.DA.10SiO2 · nH2O
var: Precious Opal4.DA.10SiO2 · nH2O
var: Wood Opal4.DA.10SiO2 · nH2O
Unclassified Minerals, Rocks, etc.
Petrified Wood-

List of minerals arranged by Dana 8th Edition classification

Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Rocks, etc.
var: Black Opal-SiO2 · nH2O
var: Precious Opal-SiO2 · nH2O
var: Wood Opal-SiO2 · nH2O
'Petrified Wood'-

List of minerals for each chemical element

HHydrogen
H Opal (var: Black Opal)SiO2 · nH2O
H OpalSiO2 · nH2O
H Opal (var: Precious Opal)SiO2 · nH2O
H Opal (var: Wood Opal)SiO2 · nH2O
OOxygen
O Opal (var: Black Opal)SiO2 · nH2O
O OpalSiO2 · nH2O
O Opal (var: Precious Opal)SiO2 · nH2O
O Opal (var: Wood Opal)SiO2 · nH2O
SiSilicon
Si Opal (var: Black Opal)SiO2 · nH2O
Si OpalSiO2 · nH2O
Si Opal (var: Precious Opal)SiO2 · nH2O
Si Opal (var: Wood Opal)SiO2 · nH2O

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Pliocene - Miocene
2.588 - 23.03 Ma



ID: 2775925
Younger tuffaceous sedimentary rocks

Age: Neogene (2.588 - 23.03 Ma)

Stratigraphic Name: Horse Camp Formation; Esmeralda Formation; Belted Range Tuff; Timber Mountain Tuff; Paintbrush Tuff; Crater Flat Tuff; Muddy Creek Formation; Siebert Tuff

Description: Tuffaceous and other young Tertiary sedimentary rocks. Most of these rocks are sedimentary with a strong volcanic component - a few are tuffaceous with a strong sedimentary component. This unit includes rocks originally mapped as the High Rock sequence in Washoe County; the Horse Camp Formation in northern Nye County; the Esmeralda Formation in Mineral and Esmeralda Counties; older lake beds in Lincoln County; the Belted Range Tuff; the Indian Trail Formation (now abandoned); Timber Mountain, Paintbrush, and Crater Flat Tuffs; Wahmonie and Salyer Formations in southern Nye County; the Siebert Tuff in Esmeralda County; the Muddy Creek Formation in Clark County; and the Thousand Creek and Virgin Valley “beds” in Humboldt County; and other unnamed units. It corresponds to units Ts3 and Tts from the 1978 State map. It is present in all counties.

Comments: Original map source: Crafford, A.E.J., 2007, Geologic Map of Nevada: U.S. Geological Survey Data Series 249, 1 CD-ROM, 46 p., 1 plate; Scale 1:250,000.

Lithology: Major:{sedimentary,volcanic}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Neogene
2.588 - 23.03 Ma



ID: 3186305
Cenozoic volcanic rocks

Age: Neogene (2.588 - 23.03 Ma)

Stratigraphic Name: Columbia River Basalt

Comments: Columbia Plateau

Lithology: Flood basalt(s); mafic volcanic rocks; basalt

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


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