2003, Formation of modern and Paleozoic stratiform
barite at cold methane seeps on continental margins: Geology, v.
The first part, dealing with sulphide-associated PGE occurrences in layered stratiform
intrusions, begins with an overview of the geology of the Muskox intrusion and its PGE concentrations, followed by descriptions of the geology, geophysics and PGE discoveries of the Fox River sill and the Mechanic intrusion in New Brunswick.
This is the first drilling program to define stratiform
mineralization in detail, as previous drilling at Florida Canyon consisted of widely-spaced drill holes in the range of 100 to 300 meters apart.
Highest-grade mineralization occurs at the near at the top of the stratiform
silicic alteration, a similar relationship to the Escondida high-grade occurrence.
OSBURN, Idaho -- Atlas Mining Company (OTCBB: ALMI) reports today that the Atlas Mining Company/KAT Exploration Joint Venture has filed 494 claims encompassing approximately 12,350 hectares (30,500 acres) on sediment hosted stratiform
copper prospects on the eastern side of Newfoundland.
The high-grade zone is stratiform
and occurs hanging wall to the lower grade portion of the Escondida deposit.
As indicated in the NI 43-101 report relating to the HRU Licences, the epigenetic, stratiform
Kvarnan mineralisation was estimated to contain 1.
At Eskay Creek, high-grade veins were the focus of exploration prior to the discovery in 1989 of rich deposits of stratiform
, sedex gold-silver-base metal mineralization at or near a mudstone-volcanic contact.
The initial drilling targets include the Cruz Vein, the Cruz breccia bodies and a stratiform
silicified zone that has anomalous bismuth-mercury geochemistry.
Quartz-antimony-gold stockworks form interconnected stratiform
"saddle-reef" style ore bodies in folded Paleozoic sediments along the axis and flanks of a cross-faulted north-south trending anticline.
Synvolcanic gold-base metal deposits: the widespread base metal prospects and geochemical signatures indicate the potential for these types of deposits, and the style of mineralization at Akasaba is consistent with such an interpretation, including its polymetallic characteristics (Au-Cu-Zn-Ag), the high concentration of sulfides (up to 30%), the stratiform
nature of the mineralized zones, multiple stratigraphic targets, and proximity to felsic flows and volcaniclastic layers.
The previous miners extracted gold from structurally controlled siliceous zones and quartz veins with disjoint pods of sulphide (pyrite, arsenopyrite, chalcopyrite), hosted in stratiform
metamorphosed calcareous shales of Proterozoic age.