Sea salt doesn't contain calcium silicate; calcium silicate can be added to salt as an anticaking agent.
Generally it does not. Table salt is sodium chloride. However, some table salt has small amounts of calcium silicate added as an anti-clumping agent.
The chemical formula for Calcium Silicate is Ca2SiO4.
A mix of sodium silicate, aka waterglass, and calcium cloride will create calcium silicate.
* Clinopyroxenes (monoclinic) ** Aegirine (Sodium Iron Silicate) ** Augite (Calcium Sodium Magnesium Iron Aluminium Silicate) ** Clinoenstatite (Magnesium Silicate) ** Diopside (Calcium Magnesium Silicate, CaMgSi2O6) ** Esseneite (Calcium Iron Aluminium Silicate) ** Hedenbergite (Calcium Iron Silicate) ** Hypersthene (Magnesium Iron Silicate) ** Jadeite (Sodium Aluminium Silicate) ** Jervisite (Sodium Calcium Iron Scandium Magnesium Silicate) ** Johannsenite (Calcium Manganese Silicate) ** Kanoite (Manganese Magnesium Silicate) ** Kosmochlor (Sodium Chromium Silicate) ** Namansilite (Sodium Manganese Silicate) ** Natalyite (Sodium Vanadium Chromium Silicate) ** Omphacite (Calcium Sodium Magnesium Iron Aluminium Silicate) ** Petedunnite (Calcium Zinc Manganese Iron Magnesium Silicate) ** Pigeonite (Calcium Magnesium Iron Silicate) ** Spodumene (Lithium Aluminium Silicate) * Orthopyroxenes (orthorhombic) ** Hypersthene ** Donpeacorite, (MgMn)MgSi2O6 ** Enstatite, Mg2Si2O6 ** Ferrosilite, Fe2Si2O6 ** Nchwaningite (Hydrated Manganese Silicate) * Schefferite, Ca(Mg,Fe,Mn)Si2O6 * Zinc schefferite, Ca(Mg,Mn,Zn)Si2O6 * Jeffersonite, Ca(Mg,Fe,Mn,Zn)Si2O6 * Leucaugite, Ca(Mg,Fe,Al)(Al,Si)2O6 * Calcium-Tschermak's molecule, CaAlAlSiO6
* Clinopyroxenes (monoclinic) ** Aegirine (Sodium Iron Silicate) ** Augite (Calcium Sodium Magnesium Iron Aluminium Silicate) ** Clinoenstatite (Magnesium Silicate) ** Diopside (Calcium Magnesium Silicate, CaMgSi2O6) ** Esseneite (Calcium Iron Aluminium Silicate) ** Hedenbergite (Calcium Iron Silicate) ** Hypersthene (Magnesium Iron Silicate) ** Jadeite (Sodium Aluminium Silicate) ** Jervisite (Sodium Calcium Iron Scandium Magnesium Silicate) ** Johannsenite (Calcium Manganese Silicate) ** Kanoite (Manganese Magnesium Silicate) ** Kosmochlor (Sodium Chromium Silicate) ** Namansilite (Sodium Manganese Silicate) ** Natalyite (Sodium Vanadium Chromium Silicate) ** Omphacite (Calcium Sodium Magnesium Iron Aluminium Silicate) ** Petedunnite (Calcium Zinc Manganese Iron Magnesium Silicate) ** Pigeonite (Calcium Magnesium Iron Silicate) ** Spodumene (Lithium Aluminium Silicate) * Orthopyroxenes (orthorhombic) ** Hypersthene ** Donpeacorite, (MgMn)MgSi2O6 ** Enstatite, Mg2Si2O6 ** Ferrosilite, Fe2Si2O6 ** Nchwaningite (Hydrated Manganese Silicate) * Schefferite, Ca(Mg,Fe,Mn)Si2O6 * Zinc schefferite, Ca(Mg,Mn,Zn)Si2O6 * Jeffersonite, Ca(Mg,Fe,Mn,Zn)Si2O6 * Leucaugite, Ca(Mg,Fe,Al)(Al,Si)2O6 * Calcium-Tschermak's molecule, CaAlAlSiO6
No. It is a halide, specifically calcium fluoride.
Sea salts are those which are isolated from sea water as NaCl, MgCl2, CaCl2, but some salts are produce on earth by rain water or other geological changes as Nitrate, Carbonate and Silicate salts.
CaSiO3
No. Coral itself is a kind of living organism related to jellyfish and sea anemones. They do build shells made of calcium carbonate, however, which is a calcium salt.
The most important salt in the sea is sodium chloride; also exist chlorides of potassium, magnesium and calcium.
calcium sulfate
CaO(s) + SiO2(s) = CaSiO3 (l)