Translation of "Verkieselung" in English

Vuggy goethitic oxidation is often associated with the breccias and silicification.

Now the actual process of the silification of the woods began.

During diagenesis a silification of the limestones took place in at least two phases.

Alternatively, for instance, the plank/board for the uppermost layer may be hardened by silicification.

A coat with mineral colors does not form a layer but instead permanently bonds to the substrate material (silicification).

The paint's durability results from the chemical bond formed by the binding agent with the substrate (silification).

Furthermore, a rapid weight loss is recorded at temperatures above 300° C., this being accompanied by a silicification of the silicone rubber.

It intersected a wide zone of faulting and brecciation that has undergone sericite alteration, with overprinted strong silicification and abundant pyrite.

At the contact from 27 metres, metasedimentary rocks were intersected with strong silicification and up to 10% pyrite, arsenopyrite, pyrrhotite, and chalcopyrite being observed.

The Guayacan epithe r mal targets are associated with major linear and circular magnetic geophysical anomalies and structures coincident with intense alteration and silicification of host rock units.

The presence and increase of silicification and albite alteration, in association with the increase in blebby sulphides, is extremely encouraging as this style of alteration is very important throughout the Goldfields region as it normally indicates a more highly prospective part of a mineralised gold system.

Moderate to strong Carlin-type hydrothermal alteration (silicification, argillization, and decalcification) extends north from Rainbow onto the Maggie Creek land position.

Drilling will initially focus on the 215 target, a zone of silver-enriched silicification located 150 metres to the northeast of the Homestake Silver deposit.

From 80.8 – 127 metres occurred variable silicification with breccias and up to 8% disseminated and massive sulphides.

SGs were then assigned to each sample interval based upon the intensity of argillic alteration and silicification in the geological drill logs.

Rails which are put under a lot of stress may have an uppermost layer of hardened material, especially a material hardened by silicification, or of hardwood.

Alteration varies from moderately argillic (kaolinite, montmorillonite and dickite) to strong silicification (silica-alunite).

From about 630 to bottom of the hole at 753 feet, the rock was altered almost beyond recognition by clays and silicification .

The relationship of this fault to the formation of the mineral zone is an aspect of further study, as are the various styles of sulphide mineralization, silicification and alteration .

Alteration encountered in the 2012 holes includes thick intervals of silicification, possible potassium flooding, and quartz veining that is consistent with previous drilling in the South Reef deposit.

Geological mapping, trenching and sampling, detailed ground geophysical surveys and two prior drill campaigns (in 2000 and 2004) have focused the attention on a deep target of intrusive rock below a 50 -200m zone of thermal alteration and silicification with increasing rock geochemical values of zinc and copper.

In addition, the Company discovered, near the center of the license, one zone of massive silicification over one kilometer long and up to 30 meters wide.

There are many different kinds of alteration associated with the different tungsten ore deposits, but the principal ones are silicification, greisenization, potash-feldspathization and chloritization.

High-sulphidation epithermal copper-gold showings, along with advanced argillic alteration - which are usually indicative of proximity to porphyry mineralization in the Philippines - as well as diatreme breccias and porphyry-type alteration, occur around the margins of the chargeability anomalies, and in erosional windows.

Alteration types include strong silicification and well-developed hematite staining, decalcification and argillization along the west and northwest base of the hill where higher gold values are concentrated and where the sediments were originally more calcareous.

High-sulphidation epithermal Cu-Au showings, along with advanced argillic alteration - which are usually indicative of proximity to porphyry mineralization in the Philippines - as well as diatreme breccias and porphyry-type alteration, occur around the margins of the chargeability anomalies, and in erosional windows.

The host volcaniclastic rocks are typically chlorite, sericite and locally potassically altered, however the more strongly mineralized intervals exhibit increased pyrite and stronger silicification than surrounding rocks.