Table 1.2

The Major Biominerals

MineralVariations
SiO2 SiOn(OH)2m−n (n <2, m <2)? 
Ca(Mg)CO3 Various forms, many with impurities: calcite, aragonite 
Ca2(OH)PO4 Apatite with impurities 
SrSO4 In Acantharia (pure) 
BaSO4 In a few plants 
CaF2 In shrimps 
MineralVariations
SiO2 SiOn(OH)2m−n (n <2, m <2)? 
Ca(Mg)CO3 Various forms, many with impurities: calcite, aragonite 
Ca2(OH)PO4 Apatite with impurities 
SrSO4 In Acantharia (pure) 
BaSO4 In a few plants 
CaF2 In shrimps 

Many other biominerals are listed and described in specialist publications5 

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