Unnamed Occurrences (ARDF - MZ010; near VABM Flat), Melozitna Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
Regional Level Types | |
---|---|
Unnamed Occurrences (ARDF - MZ010; near VABM Flat) | - not defined - |
Melozitna Mining District | Mining District |
Yukon-Koyukuk Census Area | Census Area |
Alaska | State |
USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
65° 40' 28'' North , 153° 55' 15'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
202029
Long-form identifier:
mindat:1:2:202029:0
GUID (UUID V4):
dfdd4d9b-7070-4fd4-a94b-6446a68759f5
Location: Several lode occurrences occur in an area of about one-half square mile on the southeastern flank of hill 3214 (VABM Flat), south of upper Indian River. The site corresponds to ADGGS station 92BT319 (Solie and others, 1993 [Public-Data File 93-33]). It is at an elevation of about 2,050 feet, 0.1 mile south of the center of section 8, T. 3 N., R. 24 E., Kateel River Meridian. The location is accurate.
Geology: The rocks in the vicinity of these occurrences are Lower Cretaceous, quartz-pebble conglomerate and quartzose sandstone; andesitic and dacitic tuff, breccia, and agglomerate; and tuffaceous graywacke (Patton and others, 1977). A 7-mile-long by 1-mile-wide stock of fine- to medium-grained hornblende-biotite granodiorite is within 0.5 mile of the occurrences and thermally alters the volcanic and sedimentary rocks. Patton and others (1977) correlate the stock with the Upper Cretaceous Dulbatna Mountain pluton, dated by K-Ar at 82.3 +/-3 Ma (biotite) and 90.0 +/3 Ma (hornblende). The Alaska Division of Geological and Geophysical Surveys collected 4 samples along the crest of a short ridge southeast of VABM Flat and 3 were submitted for trace-element analysis (Solie and others, 1993 [Public-Data File 93-33]). Samples of tourmaline veins in hornfels and of sulfide-tourmaline veins contained up to 82 parts per million (ppm) arsenic, 52 ppm bismuth, 268 ppm copper, and 1,057 ppm manganese).
Workings: The Alaska Division of Geological and Geophysical Surveys collected 4 rock samples along the crest of a ridge southeast of VABM Flat and 3 were submitted for trace-element analysis (Solie and others, 1993 [Public-Data File 93-33]).
Alteration: Rocks are thermally metamorphosed ('hornfelsed'). Tourmaline veins are bordered by unspecified alteration.
Commodities (Major) - Cu, Zn; (Minor) - As, Bi, Mn, Sn, Sr
Development Status: None
Deposit Model: Sn veins (Cox and Singer, 1986; model 15b), Porphyry Sn (Cox and Singer, 1986;
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
Detailed Mineral List:
ⓘ 'Tourmaline' Formula: AD3G6 (T6O18)(BO3)3X3Z |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Unclassified | |||
---|---|---|---|
ⓘ | 'Tourmaline' | - | AD3G6 (T6O18)(BO3)3X3Z |
List of minerals for each chemical element
B | Boron | |
---|---|---|
B | ⓘ Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
O | Oxygen | |
O | ⓘ Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
Other Databases
Link to USGS - Alaska: | MZ010 |
---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.