Albite | Allophane | Alunite | Amblygonite | Amorphous Silica | Anatase | Andalusite | Anorthite | Anorthosite | Aplite | Aragonite | Asbestos | Attapulgite, Palygorskite | Azurite | Baddeleyite | Ball Clay | Barytes, Barite | Bastnäsite | Bauxite | Berthierite | Beryl | Biotite | Boracite | Borate Minerals | Bornite | Brookite | Brucite | Calcite | Cassiterite | Celsian | Cerussite | Chalcedony | Chlorite | Chrysotile | Corundum | Dickite | Dolomitic Limestone, Dolostone | Fayalite | Feldspar | Galena | Gibbsite | Granite | Gypsum, Calcium sulphate | Hübnerite | Halloysite | Hectorite | Hematite | Hydroboracite | Illite | Illmenite | Iron Pyrite | K-Feldspar | Kaolinite | Kernite | Kyanite | Laterite | Lepidolite | Leucite | Limestone, Calcium Carbonate | Limonite | Magnesite | Magnetite | Malachite | Manganite | Mica | Microcline, Anorthoclase | Monazite | Montmorillonite, Bentonite | Mullite | Muscovite | Na-Feldspar | Nacrite | Nepheline | Nontronite | Oligoclase | Olivine | Organics | Pegmatite | Phlogopite Mica | Plagioclase | Potash Mica | Pyrophyllite | Quartz | Quartzite | Rutile | Sanidine | Saponite | Selenite | Sepiolite | Sericite | Serpentine | Shale | Sillimanite | Slate | Smectite | Soda Mica | Sodalite | Sphalerite | Steatite | Stibnite | Sylvite | Talc | Tremolite | Trona | Vanadinite | Willemite | Witherite | Zeolite

Hectorite

An uncommon fine grained highly plastic clay mineral related to bentonite. Named after Hector, CA. From volcanic sources.

Getting a start on testing Bentone

Getting a start on testing Bentone

Bentone (AKA Macaloid) is a super plastic additive used to modify rheolgy in many consumer products. It is made by refining Hectorite. It is very difficult to mix pure Bentone with water, it is just so sticky and the water content is so high, it takes a week to dry a sample and it cracks into pieces during drying. I am studying five different grades for use as a plasticizer in premium porcelains. I am interested in how they stack up against the king: VeeGum T (both in price and performance). The first step was to fire square tiles of the powder on small porcelain tiles at cone 6 to compare the iron content. Three sintered into a solid mass, shrinking to about half the size. The CT grade is the natural, untreated Hectorite clay (accounting for its darker color), the processing to purify the material obviously increases its affinity for water, shrinkage and fired maturity.

Links

Typecodes Clay Minerals
The property of plasticity is evident in a wide array of materials of different mineralogy. In addition, many minerals are considered parent minerals to clays, they weather down to become these clays.
Materials Hectorite
Materials Bentone MA
Minerals Montmorillonite, Bentonite
Minerals Smectite
URLs http://en.wikipedia.org/wiki/Hectorite
Hectorite on Wikipedia
URLs http://www.handbookofmineralogy.org/pdfs/Hectorite.PDF
Hectorite Mineralogy

By Tony Hansen


Tell Us How to Improve This Page

We are experiencing issues with this messaging system.
These are related to network and server improvements being made.
We are working on it now, please check back again later.

Or ask a question and we will alter this page to better answer it.

Email Address

Name

Subject

Message


Upload picture


Copyright 2008, 2015, 2017 https://digitalfire.com, All Rights Reserved