Invincible Quartz Lode

The Invincible Quartz Lode is a silver, gold, lead, copper, and tungsten mine located in Madison county, Montana at an elevation of 7,500 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Invincible Quartz Lode

Commodity

Primary: Silver
Primary: Gold
Primary: Lead
Primary: Copper
Primary: Tungsten

Location

State: Montana
County: Madison
District: Potosi

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Potosi Tungsten Mining Co.

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Discovery Year: 1951
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains

Mineral Deposit Model

Not available

Orebody

Form: IRREGULAR

Structure

Type: R
Description: Tobacco Root Batholith; Bismark Fault

Alterations

Not available

Rocks

Name: Monzonite
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic

Analytical Data

Analytical Data: ASSAY REPORT FOR CLAIM { SAMPLE NO. 3032 FROM DEV. CUT NO. 3 - GOLD: TRACE, SILVER: 0.20 OZ. PER TON, LEAD: 2.0 LBS. PER TON, COPPER: TRACE, TUNGSTIC TRIOXIDE: 0.89 STU 65% GRADE {{ SAMPLE 3033 FROM OUT CROP "A" - GOLD: TRACE, SILVER: 1.0 OZ. PER TON, LEAD: 3.0 LBS. PER TON, COPPER: TRACE, WO3: 1.49 STU 65% GRADE {{ SAMPLE 3030 FROM OUTCROP "B" - GOLD: TRACE, SILVER: 0.70 OZ. PER TON, TUNGSTEN: 2.845 STU 65% GRADE {{ SAMPLE 3031 FROM THE ORE PILE (THIS IS A GRAB SAMPLE) - GOLD: TRACE, SILVER: 2.3 OZS. PER TON, WO3: 2.23 STU 65% GRADE

Materials

Not available

Comments

Comment (Workings): IMPROVEMENTS ON THE CLAIM { DISCOVERY CUT - 12 FEET DEEP BY 8 FEET LONG BY 4-5 FEET WIDE. {{ DEVELOPMENT TUNNEL NO. 2 - 5-7 FOOT ADIT AND ABOUT 12 FEET LONG. {{ DEVELOPMENT WORKING NO. 3 - 8 FEET WIDE BY 12 FEET DEEP BY 21 FEET LONG. {{ OUTCROP A - 100 FEET WEST OF CUT NO. 3, STRIKES ABOUT N. 10 DEG. AND DIPS 75 DEG TO 80 DEG. NE. {{ OUT CROP B - 130 FEET SOUTH OF OUTCROP A. {{ OUTCROP C - 100 FEET NORTHWEST OF THE OLD ORE BIN, THERE ARE SEVERAL CUTS AND TRENCHES ALONG THE VEIN IN THIS OUTCROP. {{ TWO LOG BUILDINGS ARE ON THE CLAIM - IN BAD STATE OF REPAIR AND TOTALLY UNUSABLE AND ARE LOCATED NEAR THE CENTER AND SOUTH END OF THE CLAIM. {{ ORE BIN - LOG STRUCTURE SITUATED NEAR THE CENTER AND NORTH END OF THE CLAIM. ROTTED.

Comment (Geology): GEOLOGY: { THE POTOSI TUNGSTEN DEPOSITS OCCUR IN A LARGE IRREGULAR BODY OF ALASKITE. {{ THE ACCESSORY MINERALS ARE SPHENE (TITANITE) AND APATITE IN THE UNALTERED ROCK. FLUORITE, PYRITE, AND MAGNETITE ARE CONSTITUENTS OF THE ALTERED ROCKS.

Comment (Commodity): SAMPLES FROM DEVELOPMENT CUT NO. 3; OUTCROP A AND B; ORE PILE

References

Reference (Deposit): MBMG MEM 9.

Reference (Deposit): VITALIANO, C, CORDUA, W, 1979, GEOLOGIC MAP OF SOUTHERN TOBACCO ROOT MTN., MADISON CO., MONTANA, GEOL. SOC. AMER., MC-31.

Reference (Deposit): 1966 DIREXPL USF

Principal Gold Districts of Montana

In Montana, 54 mining districts have each have produced more than 10,000 ounces of gold. The largest producers are Butte, Helena, Marysville, and Virginia City, each having produced more than one million ounces. Twenty seven other districts are each credited with between 100,000 and one million ounces of gold production. Read more: Principal Gold Districts of Montana.