Crosby Mine (Nieman and Crosby Mine; Crosby-Nieman Mine; Marcus), Malpais Mesa, Eureka Mining District, Yavapai County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Crosby Mine (Nieman and Crosby Mine; Crosby-Nieman Mine; Marcus) | Mine |
| Malpais Mesa | Mesa |
| Eureka Mining District | Mining District |
| Yavapai County | County |
| Arizona | State |
| USA | Country |
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Latitude & Longitude (WGS84):
34° 29' 15'' North , 113° 6' 11'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Bagdad | 1,876 (2016) | 13.9km |
| Peeples Valley | 428 (2011) | 42.2km |
| Congress | 1,975 (2014) | 42.9km |
| Yarnell | 649 (2011) | 44.0km |
A former underground Au-Ag-Cu-Pb mine located in secs. 4 & 9, T.13N., R.8W., at an altitude of 3,300 feet. Started about 1906 (?). Produced 1901 [?] - 1948. Claims also in sec. 4.
Mineralization is a vein deposit with a tabular ore body hosted in the Hillside Mica Schist (muscovite schist). This schist is a small area of banded gray schist that is surrounded by light colored granite and intruded by pegmatite, rhyolite porphyry, and basic dikes. The vein varies from less than 1 inch to about 18 inches (45 cm) wide. The vein strikes N.10ºE. and dips 25º to 30ºE. Its filling, where unoxidized, consists of coarse-textured, glassy, grayish-white quartz with bunches and disseminations of pyrite. Rich ore from the oxidized zone shows brecciated quartz with abundant cellular limonite. Considerable sericite has been formed in the wall rocks.
Area structures include minor foliation in schist that trends NE. Local igneous rocks are massive. Veins are often at low angles, dipping less than 40 degrees.
Workings include an inclined shaft to 350 feet deep. A 10-stamp mill was erected on the property.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Limonite' |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 Description: Occurs as an alteration product in wall rocks. |
| ⓘ Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 Description: Occurs as an alteration product in wall rocks. |
| ⓘ Native Gold Formula: Au Description: Visible lode gold in quartz; also in iron oxides (not visible). |
| ⓘ Pyrite Formula: FeS2 Description: Bunches & disseminations in quartz. |
| ⓘ Quartz Formula: SiO2 References: John Dowis Collection--Surprise, ArizonaIdentified by Dana Slaughter: Visual Identification |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| O | Oxygen | |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| K | Potassium | |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Southern Basin and RangeWide Rift
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