SALT
Miscellaneous
- Family: None
- Region: None
- Mined At: Unspecified
- Raw Mineral: Yes
- Generic: No
Notes
(Richard Willis)
Mineral, of the ideal form NaCl with a typical empirical analysis of Na 39.34%, Cl 60.66%
Hardness: 2 Density: 2.1-2.2 Soluble in water
As a mineral, salt is halite. also known as “common salt”, “table salt”, “sea salt”, “rock salt”, “gem salt”, “chlorurium of sodium”, “sodium chloride”, and so forth; and, though rarely among ceramists and cooks, by its chemically purer form and mineral name: halite — to distinguish the sodium salt base of Na + Cl + impurities from the salts of other metals such as calcium, potassium, iron, gold, etc. For ceramists, though not for co
oks, sylvite, KCl, the mineral salt of potassium, has virtually the same advantages and disadvantages as halite, NaCl, the salt of sodium, given the particular differences/suitabilities of sodium and potassium in general for clays and glazes. Because of their water solubility and the presence of chlorine, these salts of sodium and potassium are not usually desirable for use in composing clays or glazes; yet, precisely for their undesirables, they are used for “salt-glazing”: the chlorine fluxing t
he alkali (within the salt compound), and the alkali fluxing the silica (on the clay of the piece’s surface). As well, salts in general, and these two in particular, are corrosive to kiln materials and to clays and glazes, and are avoided for their corrosiveness as well as for their solubility and, usually, release of toxic gases during temperature rises. see sylvite
Authors
- Richard Willis (Owner)
XML
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<notes>
<note>Mineral, of the ideal form NaCl with a typical empirical analysis of Na 39.34%, Cl 60.66%<BR>
Hardness: 2 Density: 2.1-2.2 Soluble in water<BR>
As a mineral, salt is halite. also known as &#147;common salt&#148;, &#147;table salt&#148;, &#147;sea salt&#148;, &#147;rock salt&#148;, &#147;gem salt&#148;, &#147;chlorurium of sodium&#148;, &#147;sodium chloride&#148;, and so forth; and, though rarely among ceramists and cooks, by its chemically purer form and mineral name: halite &#151; to distinguish the sodium salt base of Na + Cl + impurities from the salts of other metals such as calcium, potassium, iron, gold, etc. For ceramists, though not for co
oks, sylvite, KCl, the mineral salt of potassium, has virtually the same advantages and disadvantages as halite, NaCl, the salt of sodium, given the particular differences/suitabilities of sodium and potassium in general for clays and glazes. Because of their water solubility and the presence of chlorine, these salts of sodium and potassium are not usually desirable for use in composing clays or glazes; yet, precisely for their undesirables, they are used for &#147;salt-glazing&#148;: the chlorine fluxing t
he alkali (within the salt compound), and the alkali fluxing the silica (on the clay of the piece&#146;s surface). As well, salts in general, and these two in particular, are corrosive to kiln materials and to clays and glazes, and are avoided for their corrosiveness as well as for their solubility and, usually, release of toxic gases during temperature rises. <FONT SIZE=2>see <B><I>sylvite</I></B></FONT><BR>
</note>
</notes>
</material>
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