Bryzant Gold Mine

Twin Bridges, Montana

45.5390°N 112.2180°W

Mine Overview

The Bryzant Gold Mine is near Twin Bridges, Montana. Historically the site has been associated with the Tidal Wave Mining District which is now part of the Beaverhead National Forest. The Bryzant Gold Mine was closed at the time of data entry with no known plans to re-open. Production size when active was considered to be small. Mine operations consist of surface and underground workings. There is one known shaft. Subsurface length extends a maximum of 488 meters (1,600 feet). The ore mined is composed of silver, galena and sphalerite with waste material consisting primarily of pyrite and quartz. The ore body has a lenticular or lens shaped form extending 304.80 meters (1,000.00 feet) long and 0.91 meters (2.99 feet) wide. The host rock in this area is gneiss from the Neoarchean era 2.80 to 2.50 billion years ago. The Northern Rocky Mountains physiographic province of the Rocky Mountain System characterize the geomorphology of the surrounding area.

Site identification and general characteristics. Learn about USGS mines.

Copper, Gold, and Lead Primary Commodity
Site Record Type^?
Mine Development Status^?
Vein Mine Type^?
Small Production Size^?
Metallic Site Commodity Type^?
Small Mine Size^?

Mine Names

Name^? Status^?
Bryzant Mine Current
Deutschland Mine Previous

Owner Name and Address

George Bosanatz

Commodities

Additional textual information about a site or mine.

Commodity Type Importance
Copper Metallic Primary
Gold Metallic Primary
Lead Metallic Primary
Silver Metallic Primary
Zinc Metallic Primary

Deposit

ONE ORE SHOOT 100 FEET LONG AND 3 FEET WIDE WAS MINED THROUGH AN INCLINED SHAFT.

PILLAR AT SURFACE ASSAYED 38% LEAD.; INFORMATION SOURCE: 1 PUB LIT.

Location Info

Madison , Montana County / State

Continent Country State County
North America The United States Montana Madison

Notes

SE EDGE OF SECTION 28

Meridian / Township / Range Description

Meridian^? Township^? Section^? Aliquot^?
Montana Principle Meridian T.3S R.5W Sec. 28 SE
Montana Principle Meridian T.3S R.5W Sec. 33 -

Land Status

Land status information.

Land Status^? Admin Area^?
Private -

Mining Districts

Formal or informal mining district names.

District
Tidal Wave Mining District

Workings

Workings at the site.

Workings #1

Type: Surface and Underground
Sub Surface Length: 487.68 Meters

Workings

INCLINED SHAFT, TUNNELS, CUTS AND PITS.

Geology

ALL HIGHER GRADE SHIPPING ORE WAS FOUND ABOVE THE 50-FEET. LEVEL. SOME MILLING ORE IS REPORTED IN LOWER LEVELS.; 2 FEET VEIN; IRON STAINED.

Materials

Minerals or other materials present in the mine.

Role^? Material^?
Gangue/Waste Pyrite
Gangue/Waste Quartz
Ore Galena
Ore Silver
Ore Sphalerite

Orebody

Characteristics of the ore body.

Length:
Width: 0.91 meters (2.99 feet)
Strike: north 15 east
Dip: 76 east

Rocks

Geological materials at the site.

Class^? 1st Order Name^? 2nd Order Name^? 3rd Order Name^? 4th Order Name^? Most Specific Name^? Begin Time End Time Description^?
Host Rock Pony Gneiss Metamorphic Rock Gneiss - Gneiss Neoarchean Neoarchean -

Structure

Geologic structural features affecting or characterizing the site or mine.

Scale Description
Regional North And Northeast Trending Faults

Tectonic

Tectonic setting in which the site or deposit is situated.

Setting^?
Tobacco Root Batholith, Western Margin

Physiography

Physiographic area where the resource is found.

Division Province^? Section
Rocky Mountain System Northern Rocky Mountains -

Alteration

Mineralogical and chemical alteration at or near the site, which may help to indicate the geographic extent of the geological processes producing the mine.

Type^? Alterations
Local Wall Rock Sericitization And Kaolinization, Oxidation

Ore Control

Controls on emplacement of ore such as faults or other structural features.

Text^?
N15e, 80e Trending Fissure Zone

Nearby Deposits

Other deposits in the same region.

Nearby Places

Twin Bridges (5.48 miles away)
Sheridan (5.86 miles away)
Silver Star (10.90 miles away)
Waterloo (12.69 miles away)
Alder (15.81 miles away)
Pony (17.69 miles away)
Whitehall (23.64 miles away)

Nearby Mining Districts

Tidal Wave Mining District (0 miles away)
Sheridan Mining District (3.30 miles away)

Nearby Lands

Beaverhead National Forest (0.12 miles away)
Deerlodge National Forest (3.30 miles away)

Footnotes

* Mine bounds on map indicate the general area that a mine occupies. For an detailed map, refer to the overseeing BLM field office.

** The mine central point is based on an average of the mine's bounding box(es) and does not necessarily fall on the claim itself.

¹ World-class significance is determined by total endowment of the contained commodity. This includes all past production and remaining reserves. Each commodity is considered separately and commodities cannot be combined to arrive at a significant size. The tonnage thresholds are from the mine model grade-tonnage studies. As of June 2008, many entries were classified as significant under less strict rules.

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