Sentences with word «barite»

C. Sternemann, H. Sternemann, S. Huotari, F. Lehmkühler, M. Tolan, and J. S. Tse, «The barium giant dipole resonance in barite: a study of soft x-ray absorption edges using hard x-rays,» J. Anal.

These partners would offer more to us than just money; their experience with commodities such as gold, silver, zinc, as well as barite and zeolite, and how to mine them and bring them to market.

The epithermal system evolved from an early stage of silica - pyrite and argillic alteration to later deposition of quartz - barite veins and stockworks.

To evaluate each influence 3.26 billion years ago, geoscience Professor Clark Johnson and Satkoski collected samples from South Africa and compared isotopes in two forms of a rock called barite.

The bladed barite would represent a mix of ocean chemistry and hydrothermal flow.

The result was a nearly infinitesimal — but still significant — difference in the isotope ratios, signifying that the granular barite indeed was derived from sediment eroded from land.

This would also explain the unusual lack of typical pond fossils at the site, as well as the near lack of gnaw marks on bones and calcite and barite concretions found on bones excavated from the quarry.

Francesca Woodman, space ², Providence, Rhode Island, 1975 — 78, 2000 — 01; Gelatin silver print on barite paper, 10 x 8 in.; © George and Betty Woodman, New York / The SAMMLUNG VERBUND Collection, Vienna

Knowing that strontium derived from land shows a slightly higher ratio of strontium 87 than strontium derived from hydrothermal circulation, the scientists compared isotopes in each type of barite.

«There, he saw that barium is mineralized as barite and arsenic formed smaller peaks of an unknown mineral.»

How about a barite play?

Silicification was developed mainly in the sandstones and the alteration is composed of microcrystalline quartz, kaolinite, pyrite, and barite.

Forsaking gold this time, the target was barite, a mineral essential to oil and gas exploration.

A solid, or bladed, type of barite had formed at the ocean floor.

According to the research team, the fossilized remains of a Homo sapiens (and some of their tools) found in a barite mine in Morocco called Jebel Irhoud half a century ago are not, as was recently thought, 160,000 years old.

The geological resources of Belize include oil, clays, barite, sand and gravel, granite, gypsum, quartz sand, dolomite and limestone.

Capable of managing inventory of consumable drilling supplies such as cement, barite, bits, and nozzles.