DOGAMI Home page | Oregon Department of Geology and ...

Oregon Department of Geology and Mineral Industries ... (Image: Erica Harris, July 2011) Explore Oregon's geology. Vintage Ore Bin: Visitor's guide to the geology of the coastal area near Beverly Beach State Park, Oregon ... Comparison of Oregon tsunami hazard scenarios to a probabilistic tsunami hazard analysis (PTHA) Open-File Report O-19-03 ...

Mineral Ore Samples -

Specimen has a cut surface which exposes the ore inside the rock. When you tip the specimen in the light the x.s. through the ore crystals are very apparent : Gold Mine Ore Mineral # 1832 A close-up view of the specimen above showing the both the ore and some Rhodonite in the specimen which is common in ore samples from this location.

Chromite mining -

In 2012, the Oregon Resources Corporation ceased chromite mining operations due to the falling prices of chromite on international markets. In 2016 the ORC notified the Oregon Department of Geology and Mineral Industries that the chromite mining property and assets were for sale.

State of Oregon: Water Quality Permits - Metal Mining ...

This webpage provides information and resources to anyone intending to conduct metal mining operations in Oregon's streams or rivers. DEQ's fact sheet, Water Quality Permits for Metal Mining Activities, describes all water quality permits required for metal mining/prospecting and ore processing operations that discharge wastewater to the land and state waters on private or public land.

Mineral Assay and Testing - Intertek

Mineral Assay and Testing. Global mineral assay testing laboratory services. Intertek is the minerals assay testing laboratory of choice for mining and exploration companies. Intertek Mineral laboratories are located in key strategic locations around the world, serving the mining industry.

Manual of Procedure for Chemical and Instrumental …

in ore/mineral analysis. The separation of soluble and insoluble species should be near . The exact choice of method for opening of an ore depends on the nature of the ore, the element of interest and its chemical properties. The selection of the appropriate method of sample decomposition is very important for correct analysis.

Mineral Resources of the Owyhee Canyon Wilderness Study ...

Mineral Resources of the Owyhee Canyon Wilderness Study Area, Malheur County, Oregon By James G. Evans, James D. Hoffman, and Dolores M. Kulik U.S. Geological Survey J. Mitchell Linne U.S. Bureau of Mines SUMMARY Abstract The part of the 180,680-acre Owyhee Canyon Wilderness Study Area (OR-003-195) on which mineral


CHEMICAL ANALYSIS OF MINERALS There are many diff tdifferent types of bthboth qualit tilitative and quantitative analysis availableto mineralogists and petrologists. Specific techniques are chosen based on the goals of the researcher and the characteristics of the samples being studied. The four most important things to know before beginning any

Products | Cascade Minerals

Cascade Minerals' Remineralizing Soil Booster is made from all-natural, finely milled volcanic basalt that mimics the Earth's own method for producing healthy soil by releasing essential trace minerals. Fresh sources of rock minerals, like those in Cascade Minerals, are essential to the life vitality of your plants and key to supporting healthier soils.

Mineral resource estimation - Wikipedia

A Mineral Reserve includes diluting materials and allowances for losses that may occur when the material is mined. Probable Mineral Reserve. A probable mineral reserve is the economically mineable part of an Indicated and, in some circumstances, a Measured Mineral Resource demonstrated by at least a Preliminary Feasibility Study.

Ore Bin / Oregon Geology magazine / journal

quantitive chemical analysis of rocks, minerals, and ores submitted by the public and by Depart­ ... together wi th a history of the ore or mineral, giving as nearly as possible the location from which the sample was taken, ... found in rocks and minerals in the State of Oregon. The determinations most commonly requested ~ !

Where to Find Sunstone in Oregon? -

Hold a nugget of Oregon sunstone in your palm, and you will understand why the 1987 Oregon legislature designated it as the official state gemstone. Sunstone is a variety of a mineral called oligoclase. Uncommon in its composition, clarity, and colors, it is a large, brightly colored transparent gem in the feldspar family.


CHAPTER 11 APPLICATIONS OF ORE MICROSCOPY IN MINERAL TECHNOLOGY 11.1 INTRODUCTION The extraction ofspecific valuable minerals from their naturally occurring ores is variously termed "ore dressing," "mineral dressing," and "mineral beneficiation." For most metalliferous ores produced by mining operations,

12. Supergene Ore and Gangue Characteristics - USGS

In the traditional view, supergene ore and gangue minerals are the products of reactions between hypogene sulfide minerals and descending, acidic meteoric waters; these processes take place at or near the ground surface in subaerial environments (Guilbert and Park, 1986). In VMS deposits, copper and other metals are mobilized from primary massive

Waterlab Corporation - Professional Water testing in Oregon

Sometimes our customers are concerned how their water may smell or look. Other times, a doctor recommends they get their water tested. Oregon homeowners have come to count on Waterlab's reliable data provides information about water staining, bacterial contamination, mineral build-up in pipes, and well testing for home sales.

Mines And Claims In Oregon | The Diggings™

Oregon has 118,937 mining claims on public land listed in The Diggings™. Of these claims, 6.37% are active while 93.63% are now closed. Malheur, Baker, and Josephine are the most active counties in Oregon.

List of mines in Oregon - Wikipedia

Map all coordinates using: OpenStreetMap Download coordinates as: KML · GPX This list of mines in Oregon summarizes the mines listed by the Geographic Names Information System.As of January 7, 2014, there are 595 entries.

Spectrographic Analysis | Reed Laboratories - Gold Assayer

We do ore testing and assays for professional prospecting, exploration, and geology work as well as mineral processing testing. Our assay lab performs fire assays for gold and silver ores, testing daily for precious metals in trace amounts and up to rich high grade ores …

Mineral Properties, Photos, Uses and Descriptions

Home » Minerals. What Are Minerals? Minerals are materials that meet five requirements. They are: 1) naturally occurring, 2) inorganic, 3) solids, 4) with a definite chemical composition, and, 5) an ordered internal structure.


can be made by the help of optical properties in the reflected light (ore minerals) or transmitted light microscope of polished and thin sections, respectively. Mineral identification can also be done by X-ray diffractometry (XRD) and chemical analysis in the electron microprobe. Ore deposit types

Minerals, Ore, and Mining Services -

Minerals, Ore, and Mining Services. Mineral and Mining exploration and production analysis, testing, inspection and assay services. Intertek mineral experts with years of industry experience provide rapid and reliable Total Quality Assurance mineral testing and inspection services. The global minerals laboratory network services clients ...

ASSAY FAST - Ray Grimmer Lab Service

Fire assaying of ore and soil samples. Atomic Absorption Finish Available. Catering to both part-time prospectors and large mining concerns. Fast turn-around time: within a week At Ray Grimmer Lab Services - We pride ourselves on prompt, friendly customer service. Please call with any questions or inquires. 609-829-2903

Oregon Rockhounding Map - Oregon Discovery

Oregon, with its geographic and geologic diversity, is a unique state, offering a great gem-hunting experience. The land of the waves-washed coastline, high deserts, river valleys, towering volcanoes and mountain ranges are rich in mineral deposits.