Owyhee Dam, Lake Owyhee State Park, Malheur County, Oregon, USA (original) (raw)

Owyhee Dam, Lake Owyhee State Park, Malheur County, Oregon, USA i

Regional Level Types
Owyhee Dam	Dam
Lake Owyhee State Park	State Park
Malheur County	County
Oregon	State
USA	Country

Latitude & Longitude (WGS84):

43° 37' 29'' North , 117° 14' 7'' West

Latitude & Longitude (decimal):

Nearest Clubs:
Local clubs are the best way to get access to collecting localities

Long-form identifier:

mindat:1:2:5446:4

09353d4a-ab05-4c58-b54e-97bc6c9dee71

Basalts and tuffs in the area around the dam.

Owyhee Dam (National ID # OR00582) is a concrete arch-gravity dam on the Owyhee River in Eastern Oregon near Adrian, Oregon, United States. Completed in 1932 during the Great Depression, the dam generates electricity and provides irrigation water for several irrigation districts in Oregon and neighbouring Idaho. At the time of completion, it was the tallest dam of its type in the world (it was surpassed about two years later). The dam is part of the Owyhee Dam Historic District, which is listed on the National Register of Historic Places.

The dam impounds the river to create the Owyhee Reservoir, with storage capacity of nearly 1,200,000 acre-feet (1.5 km3) of water. The more than 400-foot (120 m) tall concrete-arch gravity dam is owned by the United States Bureau of Reclamation (USBR) and operated by the Owyhee Irrigation District. Haystack Rock Road is carried over the 833-foot (254 m) long crest of the dam.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

8 valid minerals. 2 (TL) - type locality of valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

Entries shown in red are rocks recorded for this region.

Igneous rock
- Normal crystalline igneous rock
  * Fine-grained ("volcanic") normal crystalline igneous rock
  * Basic volcanic rock
- Fragmental/volcaniclastic igneous rock and sediment

Detailed Mineral List:

ⓘ AnalcimeFormula: Na(AlSi2O6) · H2OHabit: trapazhedra to 2mm in diameterColour: water-clear, transperentReferences: *Staples, Lloyd W., Evans, Howard T., Lindsay, and James R. (1973) Cavansite and pentagonite, new dimorphous calcium vanadium silicate minerals from Oregon. American Mineralogist, 58 (5-6) 405-411* *Tschernich, Rudy W. (1992) Zeolites of the World. Geoscience Press, Inc., Phoenix, Arizona. 567pp.*
ⓘ 'Apophyllite Group'Formula: A B4[Si8O22]X · 8H2OReferences: *Staples, Lloyd W., Evans, Howard T., Lindsay, and James R. (1973) Cavansite and pentagonite, new dimorphous calcium vanadium silicate minerals from Oregon. American Mineralogist, 58 (5-6) 405-411*
ⓘ CalciteFormula: CaCO3References: *Staples, Lloyd W., Evans, Howard T., Lindsay, and James R. (1973) Cavansite and pentagonite, new dimorphous calcium vanadium silicate minerals from Oregon. American Mineralogist, 58 (5-6) 405-411*
ⓘ Cavansite (TL)Formula: Ca(VO)Si4O10 · 4H2OType Locality: References: Staples, L.W., Evans, H.T Jr., Lindsay, J.R. (1967) Cavansite, a new calcium vanadium silicate mineral (abstr.). Geological Society of America, Program Annual Meeting: 211-212. *Staples, Lloyd W., Evans, Howard T., Lindsay, and James R. (1973) Cavansite and pentagonite, new dimorphous calcium vanadium silicate minerals from Oregon. American Mineralogist, 58 (5-6) 405-411*
ⓘ 'Chabazite'References: *Betts, John (n.d.) John Betts website listing.*
ⓘ Gmelinite-CaFormula: Ca2(Si8Al4)O24 · 11H2OReferences: *Staples, Lloyd W., Evans, Howard T., Lindsay, and James R. (1973) Cavansite and pentagonite, new dimorphous calcium vanadium silicate minerals from Oregon. American Mineralogist, 58 (5-6) 405-411*
ⓘ 'Heulandite Subgroup'Formula: (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2OReferences: *Staples, Lloyd W., Evans, Howard T., Lindsay, and James R. (1973) Cavansite and pentagonite, new dimorphous calcium vanadium silicate minerals from Oregon. American Mineralogist, 58 (5-6) 405-411*
ⓘ OffretiteFormula: KCaMg(Si13Al5)O36 · 15H2OReferences: *Tschernich, Rudy W. (1992) Zeolites of the World. Geoscience Press, Inc., Phoenix, Arizona. 567pp.*
ⓘ OpalFormula: SiO2 · nH2O
ⓘ Pentagonite (TL)Formula: Ca(VO)Si4O10 · 4H2OType Locality: References: *Staples, Lloyd W., Evans, Howard T., Lindsay, and James R. (1973) Cavansite and pentagonite, new dimorphous calcium vanadium silicate minerals from Oregon. American Mineralogist, 58 (5-6) 405-411* *Evans, Howard T., Jr. (1973) The crystal structures of cavansite and pentagonite. American Mineralogist, 58 (5-6) 412-424*
ⓘ Stilbite-CaFormula: NaCa4(Si27Al9)O72 · 28H2OReferences: *Staples, Lloyd W., Evans, Howard T., Lindsay, and James R. (1973) Cavansite and pentagonite, new dimorphous calcium vanadium silicate minerals from Oregon. American Mineralogist, 58 (5-6) 405-411*

Gallery:

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Owyhee_Dam
Wikidata ID:	Q2042735

Mindat Articles

Field Trip to Cavansite Type Locaility by Keith Wood

Other Regions, Features and Areas containing this locality

**Columbia Basin and Range**Wide Rift
**Shoofly-Olds Ferry Domain**Domain
**Southeast Oregon–Northern California Basins**Basin

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