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Beryl No. 1 Prospect, Ward District, Boulder Co., Colorado, USA

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Latitude & Longitude (WGS84): 40° 4' 52'' North , 105° 22' 4'' West
Latitude & Longitude (decimal): 40.08111,-105.36777
Köppen climate type:BSk : Cold semi-arid (steppe) climate


REF:Deposit:: USGS-MR-36, 1963
Deposit:: USBM MINERAL EXAM. FILE; REPORTS OF ECONOMIC SIGNIFICANCE OF AND PRODUCTION OF CERTAIN MINERAL OCCUR.
Deposit:: ARGALL, 1949, COLO SCH. MINES QUART., V. 44, NO. 2, PG. 52
Deposit:: CONSV. DIV. COMP. DATE, 1,62
HANLEY AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942 - 44, USGS PROF. PAPER 22
Commodities (Major) - Beryllium, Tantalum, Niobium (Columbium)
Development Status: Occurrence
Host Rock Unit: Browns Park Formation
Host Rock: Augen Gneiss


Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


2 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Holocene
0 - 0.0117 Ma



ID: 2213077
Post-Piney Creek Alluvium

Age: Anthropocene (0 - 0.0117 Ma)

Description: Dark-gray humic, sandy to gravelly alluvium containing scattered plant remains. Underlies flood plains of major streams and terraces less than 10 feet (3 m) above stream level. Underlain by older alluvial gravel in large valleys. Thickness is from 5 to 1

Reference: Colton, Roger B. Geologic Map of the Boulder-Fort Collins-Greeley area, Colorado . U.S. Geological Survey Geologic Investigations Series I-855-G. [37]

Paleoproterozoic
1600 - 2500 Ma



ID: 2855909
Granitic rocks of 1700-m.y. age group

Age: Proterozoic (1600 - 2500 Ma)

Stratigraphic Name: Boulder Creek Granite; Cross Creek Granite; Denny Creek Granodiorite; Kroenke Granodiorite; Browns Pass Quartz Monzonite; Powderhorn Granite; Pitts Meadow Granodiorite; Bakers Bridge Granite; Tenmile Granite

Description: Includes Boulder Creek -M.Y. AGE GROUP (AGE 1650-1730 M.Y.)--Includes Boulder Creek, Cross Creek, Denny Creek, Kroenke, Browns Pass, Powderhorn, Pitts Meadow, Bakers Bridge, and Tenmile Granites, Quartz Monzonites, or Granodiorites; also, unnamed granitic rocks

Lithology: Major:{granite}, Minor:{granodiorite,quartz monzonite}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Paleoproterozoic
1600 - 2500 Ma



ID: 3186950
Paleoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Orthogneiss/paragneiss

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



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