.
Location: 190 km E from Ridgecrest, California, United States
Level 29, 2 Chifley SquareSydneyNew South Wales, Australia2000
Stay on top of the latest gold discoveries. Examine the latest updates on drilling outcomes spanning various commodities.
Mining scale, mining and mill throughput capaciites.Full profiles of select mines and projects.
Shaft depth, mining scale, backfill type and mill throughput data.Full profiles of select mines and projects.
Equipment type, model, size and quantity.Full profiles of select mines and projects.
Camp size, mine location and contacts.Full profiles of select mines and projects.
- subscription is required.
The Colosseum deposit style is a hydrothermal breccia pipe with a combination of epithermal mineralisation at original higher levels and mesothermal mineralisation at the lower levels.The Colosseum deposit is located at the southern end of the Sevier foreland thrust belt in the southern Basin and Range Province, SW USA. The project lies within in the Clark Mountain Mining District in the northeast portion of the Clark Mountain Range. The district includes the Mountain Pass rare earth mine 10 kilometres south of the Colosseum Mine, numerous abandoned copper mines, and scattered fluorite, antimony, and tungsten prospects. Most gold and silver deposits in the district are within the northeast quadrant of the district north of Clark Mountain and are associated with emplacement of a felsic breccia complex into Precambrian basement rocks.The deposit itself is associated with the emplacement of a breccia complex into Precambrian gneissic basement rocks. The complex is comprised of two felsite breccia pipes that form a northeast-southwest elongate zone, which contains mineralised zones of disseminated auriferous pyrite.Gold at the Colosseum deposit is generally sub-microscopic and associated with sulphide mineralisation, chiefly pyrite. It occurs as free gold, with minor alloyed silver. Gold is primarily in contact with pyrite, in fractures in the pyrite or along pyrite grain edges. It also occurs as isolated particles in quartz and other gangue minerals but spatially always close to pyrite but rarely as particles encased in euhedral pyrite.The gold mineralisation comprises disseminated auriferous pyrite hosted by a combination of felsite dyke intrusion, felsite breccias, sedimentary breccias and altered granite. Mineralisation is diffuse and not hosted exclusively by a particular rock type. There is no obvious visible lithological or structural control to the gold mineralisation, save for a broad NE/SW-striking enriched zone, presumably a structural corridor related to the felsite intrusions. No geological interpretation per se for the mineralisation has been completed as the gold grades define the gold mineralisation in the various host rocks. Any wireframe for the gold mineralisation would ultimately be a simple grade shell. Lithological units were delineated for the felsite/felsite breccia, sedimentary breccia and granite. There is insufficient data to define with confidence any specific or significant fault structure playing a role in the control of mineralisation. No oxidation surface was created due to a lack of logging data.DimensionsThe Mineral Resources have an 800m by 800m surface extent. With two separate bodies 200x200m The mineralisation is exposed at surface and the Mineral Resources continue to a depth of approximately 300m below surface at an RL of 1410m. The lower limit to the Mineral Resource is an arbitrary one being the result of a supplied pit shell from a cursory pit optimisation study. The mineralisation is open at depth and laterally to the southeast, beyond the North Pit zone.
