Hubbard Mound, Otter Point

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Hubbard Mound, Otter Point

by | Nov 8, 2025

Hubbard Mound is a coastal headland and the site of a historical beach placer mining prospect near the community of Nesika Beach, 1 mile (1.6 km) north of Otter Point, and about 6 miles (9.7 km) north of Gold Beach, Oregon. Gold was discovered in the black sand beaches of southern Oregon in 1852 and in the elevated marine terraces around 20 years later. According to local reports, these deposits were highly productive for a brief period before being abandoned. Subsequent ventures were sporadic and unprofitable.

Prospectors searched for platinum sources and studied the mineral content of the black sand beaches of southern Oregon. They discovered an abundance of minerals such as chromite, magnetite, and ilmenite. In 1926, John D. Mereen demonstrated the potential for recovering profitable amounts of chromite from these deposits. In February 1940, terrace deposits were drilled to investigate strategic mineral resources. The first mining of the black sands for chromite began in the spring of 1943. One of the best prospects near the Rogue River was the Hubbard Mound. Development efforts included surface trenching, adits, shafts, and drill holes to collect data for estimating the grade and tonnage of available ore. The ore body measures 6 feet (1.8 m) in thickness and extends 60 feet (18.3 m) below the surface. However, it was not considered economically viable.

During violent storms, wave action transforms beach formations and redistributes sand grains. Surface concentrations of certain minerals may accumulate during a storm, only to be washed away in the next or dissipated by wind in the dry season. The beaches of southern Oregon are estimated to contain 100,000 to 150,000 long tons (approximately 101,600 to 152,400 metric tonnes) of chromiferous sand, averaging at least 5% chromite. However, most beach sand contains less than 1% chromite and is generally considered barren. Read more here and here. Explore more of Hubbard Mound here:

About the background graphic

This ‘warming stripe’ graphic is a visual representation of the change in global temperature from 1850 (top) to 2022 (bottom). Each stripe represents the average global temperature for one year. The average temperature from 1971-2000 is set as the boundary between blue and red. The color scale goes from -0.7°C to +0.7°C. The data are from the UK Met Office HadCRUT4.6 dataset. 

Credit: Professor Ed Hawkins (University of Reading). Click here for more information about the #warmingstripes.

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