REFERENCE SPECIMENHistorical catalogue reference
Quartz
SiO₂
Silica, glass & industrial applications
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Terra Origins / Mineral universe
Industrial minerals
The mineral foundations of construction, agriculture and industrial processing.
Reference photograph · not deposit evidence. Rob Lavinsky, iRocks.com · CC BY-SA 3.0 · Wikimedia Commons
Materials & technical references
12 ENTRIESReference chemistry and laboratory requirements, not verified reserves or guaranteed product specifications. Materials awaiting Malagasy provenance verification are identified separately.
REFERENCE SPECIMENREFERENCE SPECIMENHistorical catalogue reference
Graphite
C
Carbon materials & battery anodes
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MADAGASCAR · GEOLOGICAL CONTEXTHistorical catalogue reference
Mica
Variable; muscovite KAl₂(AlSi₃O₁₀)(OH)₂
Insulation & specialist fillers
Explore materialMADAGASCAR · GEOLOGICAL CONTEXTHistorical catalogue reference
Kaolin
Kaolinite: Al₂Si₂O₅(OH)₄
Ceramics & industrial fillers
Explore materialMADAGASCAR · GEOLOGICAL CONTEXTHistorical catalogue reference
Clay
No single formula
Cement & ceramic raw materials
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Limestone
Main carbonate commonly CaCO₃
Cement, lime & industrial feedstock
Explore materialMADAGASCAR · GEOLOGICAL CONTEXTHistorical catalogue reference
Gypsum
CaSO₄·2H₂O
Construction materials
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Salt
NaCl (halite)
Chemical & food applications
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Apatite
Ca₅(PO₄)₃(F,Cl,OH)
Phosphate-bearing mineral
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Calcite
CaCO₃
Carbonate mineral & ornamental uses
Explore materialMADAGASCAR · GEOLOGICAL CONTEXTProvenance under review
Calcium chloride
CaCl₂ (anhydrous); hydrates also occur
Industrial salts, moisture control & process applications
Explore materialMADAGASCAR · GEOLOGICAL CONTEXTProvenance under review
Phosphate rock · igneous origin under review
No single formula; apatite-bearing rock
Phosphate feedstock & agricultural assessment
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