Christmas Mine (Red Bird shafts; Inspiration Mine; Hackberry shafts), Christmas, Christmas area, Banner District, Dripping Spring Mts, Gila Co., Arizona, USA
|Latitude & Longitude (WGS84):||33° 3' 30'' North , 110° 44' 45'' West|
|Latitude & Longitude (decimal):||33.05833,-110.74583|
|Other regions containing this locality:||Sonoran Desert, North America|
|Köppen climate type:||Csa : Hot-summer Mediterranean climate|
A former surface and underground Cu-Au-Ag-Mo-Bi-Pb-Zn-Be-W mine with garnet abrasive, wollastonite and iron, located in the NW¼ sec. 29 & in sec. 30, T4S, R16E, 8 miles N of Winkleman, 22 miles S of Globe, on federal land. This mine is located at Christmas (headframe hamlet) near Hayden, AZ (8 miles North of Winkleman and 22 miles South of Globe). Previous operators included Anaconda Co.; Christmas Copper Co.; the Columbia Mining & Milling Co.; and the Riviera Mines Co. Previous owners include the Inspiration Consolidated Copper Co. Owned and operated by the Cyprus Christmas Mining Co. (1988). Most recently it was owned by Phelps Dodge until that corporation's buy-out by Freeport Macmoran, which now controls the property. NOTE: Alternate coordinates provided: 32.9986N, 110.7661W.
This property was located in 1880 by Messrs. Dennis O'Brien and William Tweed. The claims were relocated in 1902 by G.B. Chittenden. Serious mining started about 1905. The workings go to the 908 foot level but the deposits were drilled deeper. There were 5 shafts including the No. 3 (main shaft)(verticle, 3-compartment to the 908 foot level), the Hackberry shaft, the Christmas shaft, the No. 4 shaft, plus one additional shaft. The initial claims proved to be on the San Carlos Indian Reservation and were declared invalid. In December, 1902, that portion of the reservation was restored to public domain by executive order and the claims were relocated on Christmas evening by Mr. G.B. Chittenden, hence the name. The mine was later owned by the Inspiration Copper Co. until its closure in January, 1982.
The mineral deposits are in a thick series of gently dipping Paleozoic limestones (Naco Limestone; Escabrosa Limestone and the Martin Limestone) that range from Devonian to Permian (?). Overlying the limestones with only slight discordance, is a thick sequence of Cretaceous (?) volcanic rocks, mainly andesitic tuffs, breccias, and flows. A small quartz diorite stock has been intruded into the limestones and volcanic rocks. The Christmas fault cuts northwestward through the limestones, lavas, and the quartz diorite intrusive. The eastern part has been depressed, bringing the lavas in contact with the limestones, which crop out West of the fault.
The mineral deposits are contact metamorphic or pyrometasomatic type. The mineralized zones extend to the surface, where there was an open pit mine as well. The ore zone is 1524 meters long, 822.96 meters wide, with a depth-to-top of 15 meters, depth-to-bottom of 655.32 meters, at 24.38 meters thick.
Area structures include the Christmas-Joker Fault zone 7.5 miles long and 100 feet wide, striking NW and other cross-cutting fractures.
Ore control was a limestone-diorite contact, favorable limestone beds, garnetized areas, and fractures in garnet-rich zones. Ore concentration was pyrometasomatic replacement of limestone with some oxidation on fractures. Alteration was hydrothermal with epidotization, silicification, propylitic, K-silicate, quartz-sericite-chlorite, oxidation, and carbonatization.
Dimensions of the quartz diorite stock are approximately 1500 by 3000 feet elongated in a N60E direction. The deposit is zoned with a pyrite-chalcopyrite core, a chalcopyrite-bornite intermediate zone, and a pyrrhotite-sphalerite-chalcopyrite margin. The main mineralization is in limestone and contact area, but lesser mineralization is present in the diorite and andesite.
Past production was mainly from ore bodies in the Naco limestone of Pennsylvanian and Permian (?) age. A few small ore bodies have been mined from the Escabrosa limestone of Mississippian age. The ore in the Naco occurs in flat, tabular bodies which are replacements of certain favorable limestone beds close to their contact with the quartz diorite. The ore is confined to eleven distinct beds, which are consistently mineralized wherever they occur in favorable relationship to the contact. They constitute a zone about 425 feet thick of interbedded limestones and shale. The deposits in the Excabrosa are thick, irregular bodies that lie against the contact.
Workings total 1066 meters long, 762 meters wide and 487.68 meters deep.
Developments include 6 shafts with levels every 100 feet down to the 900 foot level. The 1600 foot level extends to the adjacent McDonald shaft. Dimensions estimated from mine map. Open pit, and cut and fill mining.
Total production is unclear; however, available statistics indicate a total of about 55,340,000 pounds of copper (1905 to the end of 1943), plus $160,000 of gold and $150,000 of silver (period values). 1905-1914 production not included in ABGMT-USBM file data. Ore analysis: 0.005 oz/t Au, 0.23 oz/t Ag, 2.04% Cu, 33.2% Si, 1.7% Al, 3.6% S, 12.8% Fe, 28.2% CaO.
Mineral ListMineral list contains entries from the region specified including sub-localities
79 valid minerals. 4 (TL) - type locality of valid minerals.
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
|Kungurian - Moscovian|
272.3 - 315.2 Ma
|Permian to Pennsylvanian sedimentary rocks|
Age: Paleozoic (272.3 - 315.2 Ma)
Stratigraphic Name: Hermit Formation; Supai Group; Schnebly Hill Formation; Naco Group
Description: Interbedded sandstone, shale, and limestone usually characterized by ledgy outcrops. Orange to reddish sandstone forms cliffs near Sedona. This unit includes Supai Group and Hermit Shale in northern Arizona and Naco Group in southern Arizona. It was deposited in coastal-plain to shallow-marine settings during time of variable and changing sea level. Rocks of this map unit in southern Arizona may be in part equivalent to Permian rocks of map unit P in central and northern Arizona. (280-310 Ma)
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. 
Localities in this Region
- Gila Co.
- Dripping Spring Mts
- Banner District
- Christmas area
- Christmas Mine (Red Bird shafts; Inspiration Mine; Hackberry shafts)
- Christmas area
- Banner District
- Dripping Spring Mts
- Gila Co.