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silica 
Chalcedony rose
Rights Managed 
Picture jasper
Rights Managed 
Chalcedony rose
Rights Managed 
Silicosis, light micrograph
Rights Managed 
Quartz nodule, polarised light micrograph
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Quartz nodule, polarised light micrograph
Rights Managed 
Radiolarian (Anthocyrtis sp.), SEM
Rights Managed 
Radiolarian (Xiphostylus sp.), SEM
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Radiolarian (Spongoxiphus prunococcus), SEM
Rights Managed 
Radiolarian (Tripospyris sp.), SEM
Rights Managed 
Radiolarian (Lychnocanium pyriforme), SEM
Rights Managed 
Radiolarian, SEM
Rights Managed 
Radiolarian (Astrosestrum sp.), SEM
Rights Managed 
Radiolarian (Xiphostylus sp.), SEM
Rights Managed 
Radiolarian (Tripospyris sp.), SEM
Rights Managed 
Radiolarian (Family Zygospyrida), SEM
Rights Managed 
Radiolarian (Lithochytris sp.), SEM
Rights Managed 
Radiolarian (Xiphostylus sp.), SEM
Rights Managed 
Radiolarian (Lychnocanium sp.), SEM
Rights Managed 
Radiolarian (Family Tripocyrtida), SEM
Rights Managed 
Radiolarian, SEM
Rights Managed 
Radiolarian, SEM
Rights Managed 
Radiolarian, SEM
Rights Managed 
Radiolarian (Astrosestrum sp.), SEM
Rights Managed 
Radiolarian (Lycnocanium sp.), SEM
Rights Managed 
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