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Volcano Gases and Solids
Gases: steam (H2O) sulfur dioxide(S02), hydrogen sulphide (H2S), carbon sulphide (CS), carbon disulfide (CS2), carbon monoxide(CO), carbon dioxide(C02), fluorine (F), bromine (Br), chlorine (Cl), hydrogen chloride (HCl), Hydrogen(H2), methane (CH4), hydrogen fluoride (HF), hydrogen bromide (HBr), mercury(Hg), lead(Pb), and gold(Au).

Chemical Elements and Minerals in ash particles and lava rock samples:
silica, Chromium (Cr), Lead (Pb), Manganese (Mn), Cadmium (Cd), Strontium (Sr). Copper (Cu), Aluminum (Al), Calcium (Ca), Magnesium (Mg), Zinc (Zn), Titanium (Ti), Mercury (Hg) and Iron (Fe)
VOLCANOES - Effects on Health
Respiratory -breathing ash asthma, bronchitis, emphysemaGas Plumes and AirplanesCrops, land - poisons in volcano ash    Effects in ocean - Hydrothermal Volcanoes  •  Geotourism - safe viewing  •  Destruction: Buildings, transportation,communication   Good & Bad Bacteria that live in underwater volcano soils •  Study Martian Volcanoes on Earth
FUN  Make Your Own Volcano  •  Make A Volcano Cake
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Volcano gases could be poisonous,
cows and sheep that eat the grass where ash has fallen often get sick or die from flourine and people breathing in the gases or ash might have breathing problems.
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