It occurs with mooreite, willemite, fluorite, hydrozincite, pyrochroite, zincite and rhodochrosite at Sterling Hill, New Jersey.
2.
Sonolite has been found in association with calcite, chlorite, franklinite, galaxite, manganosite, pyrochroite, rhodochrosite, tephroite, willemite, and zincite.
3.
It has been found in association with barite, barysilite, calcite, copper, franklinite, garnet, glaucochroite, hausmannite, jerrygibbsite, manganosite, pyrochroite, rhodochrosite, sonolite, spessartine, sussexite, tephroite, vesuvianite, willemite, and zincite.
4.
Other early structures included copper, calcium fluoride ( CaF 2, also known as " fluorite " ), calcite ( CaCO 3 ) and pyrite ( FeS 2 ) in 1914; spinel ( MgAl 2 O 4 ) in 1915; the rutile and anatase forms of titanium dioxide ( TiO 2 ) in 1916; pyrochroite Mn ( OH ) 2 and, by extension, brucite Mg ( OH ) 2 in 1919;.
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