| Deposit ID | 10161032 |
|---|---|
| MRDS ID | A013138 |
| MAS/MILS ID | 0021110072 |
| Record type | Site |
| Current site name | Delangle Mountain Magnetite |
| Related records | 10002236 |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -136.93399, 58.40661 (WGS84) |
| Elevation | 762 |
| Location accuracy | 100(meters) |
Political divisions (FIPS codes)
Hoonah-Angoon(Census area)
Alaska(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Mount Fairweather B-3(quadrangle 1:63,360 scale)
Mount Fairweather SE(quadrangle 1:100,000 scale)
Mount Fairweather(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Glacier Bay(hydrologic unit)
Northern Southeast Alaska(hydrologic accounting unit)
Southeast Alaska(hydrologic subregion)
Alaska(hydrologic region)
Federal lands
Glacier Bay National Park(National Park)
National Park NPS(Type of land area)
NPS(Federal land areas administered by NPS)
| Country | State |
|---|---|
| United States | Alaska |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Copper River | 040 S | 051 E | 14 | SWNENE | Alaska |
| Commodity | Importance |
|---|---|
| Iron | Primary |
| Materials | Type of material |
|---|---|
| Hornblende | Unknown |
| Ilmenite | Unknown |
| Magnetite | Unknown |
| Plagionite | Unknown |
| Main Entrance (1) | -136.93399, 58.40661 |
|---|
| Thickness | 6M | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Length | 305M | ||||||||||||||||||||||||||
| Width | 35M | ||||||||||||||||||||||||||
| Area | 10HA | ||||||||||||||||||||||||||
| Depth to top | 0M | ||||||||||||||||||||||||||
| |||||||||||||||||||||||||||
| Development status | Prospect |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1952 |
| District name | Juneau District |
|---|
| Type of mineral rights | Located Claim |
|---|
| Ownership category | National Wilderness |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0021110072 | |
| USGS | Mineral Resources Data System | MRDS | A013138 | MAS references MRDS |
| Subject category | Comment text |
|---|---|
| Deposit | CLAIM LAPSED NO CURRENT OWNER. ON DELANGE MOUNTAIN A LAYERED GABBRO INTRUSSIVE IN AN EXPOSED THICKNESS OF 2,000 FT DISPLAY SYNFORMAL STRUCTURE. ALTHOUGH THE EXPOSURE REVEALS NEITHER TOP NOR BOTTOM CONTACT, LAYER ARE DELINEATED BY VARIATIONS IN COMPOSITION AND TEXTURE OF THE CONSTITUENT MINERALS. DURING THE CUMULUS PROCESS CONSIDERED TO HAVE CAUSUED THE LAYERING, RECRSTALLIZATION WITHIN THE GRADATIONAL ZONE OF THE SURROUNDING ROCK OCCURED. HORNBLENDE- PLAGIOCLASE PEGMATITES FORMED IN THE GABBRO NEAR THE CONTACT. MAGNETITE OCCURS THROUGHOUT THE PEGMATITE BUT TENDS TO BE CONCENTRATED NEAR THE LARGER HORNBLENDE AND PLAGIOCLASE CRYSTALS. PLACED CHIP SAMPLES WERE ASSAYED AND SHOWED > 10% FE , > 1% TI & CU 150-500 PPM. TI VALUES MAY BE MUCH HIGHER UPPER DETECTION LIMIT 1%. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 12-FEB-1988 | Sbh | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.