Black Cap Mine (Black Cap claim), Mansfield Mine group (Mansfield No. 1 and 2), Mansfield Gulch (Mansfield Canyon), Temporal Gulch, Wrightson Mining District, Santa Cruz County, Arizona, USAi
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
31° North , 110° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~1km
Type:
Köppen climate type:
Mindat Locality ID:
34343
Long-form identifier:
mindat:1:2:34343:0
GUID (UUID V4):
93277e05-d71c-4995-854a-daef4feff8cd
‡Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 228-229.
Rohrbacker, R.T. (1964) Geology of the Temporal Gulch-Mansfield Canyon area, Santa Cruz County, Arizona: Tucson, University of Arizona, M.S. thesis, 81 p.
Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 90 (Table 4).
Arizona Bureau of Mines file data.
A Ag-Cu-Au mine located in T.21S., R.15E., about 4,400 feet west of the Sweet Mine, at an elevation of 5,020 feet on the south slope of Mansfield Gulch. Owned at times, or in part, by Mansfield & Ryan; the Gunsight Mining Co.; Powers; Mansfield Mining & Smelting Co.
Mineralization is a vein deposit which occur mainly in a 10 foot wide siliceous vein or lode (Black Cap vein) which dips 70ºSE. The oreshoot or pay streak is said to be about 3 feet wide. The ore contains mainly chalcopyrite and pyrite in the fine-grained, massive form, a little tetrahedrite and galena, considerable manganese, and in places bornite.
The country rock is close-grained dark-gray monzonite or diorite allied to that of the Sweet Mine, and is considerably altered. As at the Sweet Mine, it is intruded and overlain by rhyolite on the south. The mine seems to be on an east-west contact of these two rocks.
Workings include a 140 foot deep shaft and a 200 foot tunnel with laterals on three levels and stopes, aggregating nearly 2,000 feet of work. The levels are the 30, 90 & 130. Worked principally in 1907.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Bornite Formula: Cu5FeS4 Description: A principal component of a moderate-sized portion of the oreshoot. |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Galena Formula: PbS |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S Description: A little occurs. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Bornite | Cu5FeS4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Fe | Iron | |
| Fe | ⓘ Bornite | Cu5FeS4 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Bornite | Cu5FeS4 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Sb | Antimony | |
| Sb | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Regions, Features and Areas containing this locality
Mexico
- Sierra Madre OccidentalMountain Range
North America
- Sonoran DesertDesert
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mazatzal DomainDomain
USA
- Arizona
- Santa Rita MountainsMountain Range
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.
