Railroad Fault and the Rain Fault The company has compared North Bullion more to the northern Carlin Trend mines, but the news release had this to say about the Railroad zone:
This (the new discoveries) bodes well for many of the other targets we are developing and intending to pursue on the property, especially perhaps the nearby Railroad Fault zone, a close analog to Newmont’s and Premier Gold’s Rain Fault gold zone located just to the north in the Rain mining district
The northern most part of GV's property is less than a mile from Rain. (Maybe closer if they picked up more land that far north) The Rain subdistrict has 9 gold deposits. The following is a 21 page report that is of interest._______________________
GEOLOGIC OVERVIEW OF THE RAIN SUBDISTRICT https://www.nbmg.unr.edu/dox/b111/rain.pdf
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Paricularly: the beginning abstract, the introduction, the conclusion, and the maps that show faults heading south into GV territory. Mathewson is credited a lot in the report, of course.
Some snippets:
Go l d o r e i n t h e R a i n s u b d i s t r i c t d e v e l o p e d a l o n g t h e
unconformity between the Mississippian Webb Formation and
the underlying Devonian Devils Gate Limestone. Hydrothermal
breccia developed in thin-bedded to laminated mudstone of the
middle to lower Webb Formation and collapse breccia in
medium- to thick-bedded limestone of the upper Devils Gate
Limestone that served as channelways for gold-bearing
hydrothermal solutions. Pipe-like breccia bodies, some
containing higher-grade gold mineralization, developed within
the Devils Gate Limestone below the collapse breccia zones.
Both the Rain and
the Emigrant fault zones are described as having associated
“horst” and “graben” blocks based on the apparent vertical
displacement of stratigraphy across their boundaries
The gold zones have a distinct gravity
signature (gravity surveys delineate the margin of the
structurally uplifted block that defines the Rain horst)
Geophysics plays an integral role in gold exploration along the major structural features in the Rain subdistrict. Gravity surveys have helped to delineate fault boundaries by measuring density contrasts along the major structural discontinuities.Gravity anomalies define the boundaries and lateral extent of the Rain fault zone and Rain horst northwest of the Rain open pit deposit. A gravity anomaly also defines the north-trending Emigrant Springs “horst” block east of the Rain deposit.
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At Rain, medium- to thick-bedded, fine-grained limestone
of the Devils Gate Limestone lies below thin-bedded to finelylaminated mudstone and claystone of the Webb Formation. The
importance that this contact has on the localization of gold
mineralization cannot be overstated for the deposits within the
district.
(From GV site)