hydrothermal

hydrothermal processes of low intensity.

As a whole, the deposit belongs to middle-low temperature postmagmatic hydrothermal deposit.

The calcium borate product was prepared with natural ulexite powder,through hydrothermal depolymerization and phase inversion.

In addition, the syntheses of one-dimensional chalcogen simple substance under hydrothermal conditions are also explored.

In addition , only pentlandite, coffinite and the epidote in the alteration zone of volcanogene hydrothermal gold deposit are typomorphic minerals.

Moreover, two types of cements of limnic calcite and limnic dolomite and hydrothermal dolomite of reburial period are included in the karst rocks.

In this paper the relationship between the crystal forms and the growth mechanism of quartz and tinstone under the hydrothermal solution conditions has been studied.

The alabandite and getchellite of hydrothermal origin, cement anatase of alkaline volcanic origin, and the high content of chlorite in coal were fist found in coals.

Precipitation of metals under hydrothermal conditions has the advantage of a compact plant but the disadvantage of producing ammonium sulfate as a coproduct.

The faulted structure,hydrothermal alteration,gossan,geophysical-geochemical exploration anomalies are comprehensive ore-hunting indicators.

The cementitious behaviour and hydrothermal reaction products in autoclave curing of pure kirschsteinite steelslag or kirschsteinite steelslag with quartz powder were studied.

The authors con-sider that ore-forming process of the post-magmatic hydrothermal gold deposit has immediaterelations with magmatism.

Taking acid-treated stellerite as main material, zeolite X powder was prepared by hydrothermal method.

The Sn granites are characterized by biotite and titanite as Sn-bearing minerals, which suffured hydrothermal alteration, leading to tin leaching and subsequent crystallization of cassiterite.

Generation of uranium was closely related to migration and escaping of natural gas and may be also relevant to hydrothermal solution activities during epigenesis period.

The hydrothermal synthesis method was adopted to prepare the rutile-type nano-sized TiO2 by using low-cost metatitanic acid as the starting reactant and the monacid as the dressing agent.

The types of deposits basically are differential metasomatism in the later magma, pneumatolytic hydrothermal process, pegmatite process, residual deposits and placer deposits.

Monodispersed antimony-doped tin oxide(ATO) conductive nanoparticles were synthesized by directly hydrothermal method at 260 ℃ from the starting materials tin oxalate and tartrated antimony.

This part we introduce complexes synthesized by hydrothermal method containing inorganic polyacid, bipyrindine, organic polyacid, pyridine-carboyxlate, and mixed polyacid and polybase ligands.

Listen to this hydrothermal vent deep under the ocean.

Things like hydrothermal vents or hot springs or volcanic settings.

A more likely explosion at Yellowstone would be a hydrothermal eruption.

This hydrothermal environment is very similar to that in which life first appeared.

One place these pioneering organisms may have emerged is at hydrothermal vents, deep underwater.

To picture a hydrothermal vent, imagine an underwater volcano.

Energy is particularly concentrated at the steep chemical gradients of hydrothermal vents.

Oceanographer, Alex Rogers, joined an expedition which discovered a hydrothermal vent in the ocean near Antarctica.

Because those hydrothermal vents underneath that sea might have created a very conducive environment for life.

The fish had been living near an underwater hot spring, known as a hydrothermal vent, in the Mid-Atlantic Ridge.