Yugawaralite is a clear or pinkish

mineral In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid substance with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.John P. Rafferty, ed. (2011): Mi ...

of the zeolite group. It was first described by Sakurai and Hayashi (1952) near a waterfall by some hot springs near

Yugawara is a List of towns in Japan, town located in Ashigarashimo District, Kanagawa Prefecture, Japan. , the town had an estimated population of 23,267 and a population density of 570 persons per km2. The total area of the town is . Geography Yugaw ...

Etymology

Yugawaralite is named after the town

, where it was found.

Properties

Yugawaralite is

piezoelectric Piezoelectricity (, ) is the electric charge that accumulates in certain solid materials—such as crystals, certain ceramics, and biological matter such as bone, DNA, and various proteins—in response to applied stress (mechanics), mechanical s ...

and

pyroelectric Pyroelectricity (from Greek: ''pyr'' (πυρ), "fire" and electricity) is a property of certain crystals which are naturally electrically polarized and as a result contain large electric fields. Pyroelectricity can be described as the ability of ...

Location

Yugawaralite is found in geothermally active areas such as Japan. In Japan, yugawaralite is found on

Honshu , historically known as , is the largest of the four main islands of Japan. It lies between the Pacific Ocean (east) and the Sea of Japan (west). It is the list of islands by area, seventh-largest island in the world, and the list of islands by ...

, where Yugawara is the type locality. In India, it is found in small amounts. Other locations where it has been found is

Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the United States * Washington, D.C., the capital of the United States ** A ...

Alaska Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the north ...

Yellowstone National Park Yellowstone National Park is a List of national parks of the United States, national park of the United States located in the northwest corner of Wyoming, with small portions extending into Montana and Idaho. It was established by the 42nd U ...

British Columbia British Columbia is the westernmost Provinces and territories of Canada, province of Canada. Situated in the Pacific Northwest between the Pacific Ocean and the Rocky Mountains, the province has a diverse geography, with rugged landscapes that ...

Iceland Iceland is a Nordic countries, Nordic island country between the Atlantic Ocean, North Atlantic and Arctic Oceans, on the Mid-Atlantic Ridge between North America and Europe. It is culturally and politically linked with Europe and is the regi ...

Sardinia Sardinia ( ; ; ) is the Mediterranean islands#By area, second-largest island in the Mediterranean Sea, after Sicily, and one of the Regions of Italy, twenty regions of Italy. It is located west of the Italian Peninsula, north of Tunisia an ...

, and

Reunion island Reunion may refer to: * Class reunion * Family reunion Reunion, Réunion, Re-union, Reunions or The Reunion may also refer to: Places * Réunion, a French overseas department and island in the Indian Ocean * Reunion, Commerce City, Colorado, U ...

Alaska

In Alaska, yugawaralite is found about east of

Fairbanks, Alaska Fairbanks is a Municipal home rule, home rule city and the county seat, borough seat of the Fairbanks North Star Borough, Alaska, United States. Fairbanks is the largest city in the Interior Alaska, interior region of Alaska and the second la ...

. In this site, yugawaralite has been recorded up to long.

Japan

In Yugawara, the crystals are found at Fudō Falls in a layer of the

Neogene The Neogene ( ,) is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period million years ago. It is the second period of th ...

References

External links

{{commonscategory, Yugawaralite Zeolites Minerals Monoclinic minerals