Silver Glance Mine (Ramboz deposit; Ramboz vein; Rambo group [in part]; Silver Glance deposit; Racine Mines group; Dynomite Mine), Rescue Canyon, Globe Hills Mining District, Globe-Miami Mining District, Gila County, Arizona, USAi

Regional Level Types
Silver Glance Mine (Ramboz deposit; Ramboz vein; Rambo group [in part]; Silver Glance deposit; Racine Mines group; Dynomite Mine)	Mine
Rescue Canyon	Canyon
Globe Hills Mining District	Mining Sub-district
Globe-Miami Mining District	Mining District
Gila County	County
Arizona	State
USA	Country

A former surface and underground Mn-Ag-Cu-Pb-Au-Zn mine located in the NW¼SW¼ sec. 3, T1N, R15E, adjoining the Rescue Mine on the SE side of Ramboz Peak (0.7 miles SE of) about 1.5 miles N of Black Peak, 3½ miles north of Globe, on private land. The property consists of 8 claims including the Silver Glance, formerly the Dynamite claim, unpatented. Discovered by Henry Ramboz in 1875. Produced 1914-1954. Worked for Mn in the 1940's. Owned by the Inez Thomas Estate (1958). Operated by Mr. John Duber (1954). Additional previous owners/operators include Henson Thomas; Mrs. Thomas and Jacob Judesh (1939); Margaret Harding (1942); L. W. Racine and W. F. Ssholl (1942); M. L. Feagles; Clarence Hughes; and Andrew Sitica.

Mineralization is the Ramboz vein with lenses and stringers of ore, hosted inn the Pioneer Formation. It strikes about N60E and dips vertical to 80SE. The principal oreshoot is 300 feet SE of the saddle at the head of Rescue Canyon.

The oreshoot on which the shaft was sunk is said to have been stoped from bottom to surface for about 100 feet along the strike. The stope was from 3 to 4 feet wide.

The vein is a replacement of diabase along a minor fault, and ranges from a mere stringer a fraction of an inch wide to a replaced zone 4 feet wide. The vein is completely oxidized to the depth reached by the shaft. The vein matter, which is mainly quartz and partly replaced diabase containing seams and irregular masses of pyrolusite, manganite, and psilomelane-like minerals. Limonite is generally present but not abundant. The middle part of the vein, where sulfides were most abundant, is a cellular boxwork characteristic of leached sphalerite. The tin siliceous septa are coated with manganese oxides. There are occasional small knots of cerussite and scattered masses of lamellar barite. The iron and manganese oxides generally contain a little copper. A little chlorargyrite was recognized.

A small pocket of sulfide ore cut by the adit may be approximately representative of the hypogene vein matter. It consists of light-colored sphalerite, a little galena, and carbonates, predominantly rhodochrosite and ankerite.

A nearly parallel branch of the main vein crops out about 150 feet to the SE. The outcrop of the branch shows about the same intensity of mineralization as that of the weaker part of the main vein.

The vein faults probably continue northeastward and intersect a broad fractured zone lying between two nearly parallel faults whose general strike is N.20ºE. These faults and the rock between them are not well exposed at the surface. but evidence of mineralization can be seen in some places. The now inaccessible workings here exposed several mineralized fractures that contain manganese oxides, probably formed by the oxidation of manganese-bearing carbonates. The east fault forms the contact between diabase and a small block of Pinal schist.

About 750 feet SW of the old shaft, the faults extend across a saddle and continue into the head of Big Johnnie Gulch, whence they can be traced southwestward to within 1,000 feet of the NE end of the Irene vein fault, which probably is a part of the same fault system.

Area structures include NE and ENE faults. A fault block of Pinal Schist and Madera Diorite is immediately east of the mine. The ENE-trending Ramboz vein fault intersects two parallel N20E-trending faults directly NE of the mine, forming a broad fracture zone, all mineralized. A small outcrop are of the Precambrian Pioneer Formation is found east of this zone, with a NW strike and 30 degree SW dip.

Workings include several shallow shafts, including an 85 foot deep shaft, sunk on the oreshoot; an adit about 90 feet long, driven southwestward from it's portal in the canyon at a point NE of the shaft; and several shallow pits form the mine workings. 100 feet of stope 3-4 feet wide, striking NE, is found at the base of the shaft. Most of the production from the claim was mined from a lens of ore along the western side.

Other Databases

Link to USGS MRDS:	10046307

Other Regions, Features and Areas containing this locality

References