REFERENCE SPECIMENHistorical catalogue reference
Quartz
SiO₂
Silica, glass & industrial applications
Explore material
Terra Origins / Material intelligence
Phosphate rock · igneous origin under review
Phosphate feedstock & agricultural assessment
MADAGASCAR GEOLOGICAL CONTEXT · NOT A PHOTO OF THIS MATERIAL
Reference photograph · not deposit evidence. Diorit · CC BY-SA 3.0 · Wikimedia Commons
- Research family
- Industrial minerals
- Reference chemistry
- No single formula; apatite-bearing rock
- Crystal system
- Material-dependent
- Malagasy provenance
- Under review
01 / Technical dossier
The material. The evidence.
Reference properties and the analytical work needed to assess this material for industrial use.
TO-REF-PHOSPHATE-ROCK
Revision 1.0 · Technical reference
Material identity
No single formula; apatite-bearing rock
Igneous phosphate rock is a geological material, not a single mineral. Volcanic and plutonic origins are distinct and require petrographic evidence; a volcanic origin is not established for this entry.
Malagasy provenance not verified
Material reference under review. Apatite is listed separately; a specific Malagasy phosphate-rock source, volcanic origin, economic grade and commercial availability are not established by this reference.
Laboratory characterisation
Parameters to establish on a representative sample. Methods below are analytical routes, not a certified test protocol. No lot-specific result or acceptance limit has been supplied.
| Parameter / reporting unit | Analytical route | Result |
|---|---|---|
| P₂O₅ / CaO / MgO% dry mass | Validated XRF or digestion + ICP-OES / ICP-MS; matrix-specific preparation | Not supplied |
| Cd / As / Pb / Umg/kg | Validated XRF or digestion + ICP-OES / ICP-MS; matrix-specific preparation | Not supplied |
| Phosphate solubility / reactivity% P₂O₅ soluble; named extractant | State citric acid, formic acid or neutral ammonium citrate method and extraction conditions | Not supplied |
| Mineral phases and proportionsphase identification / % | X-ray diffraction (XRD); quantify with a validated method | Not supplied |
Traceability & certification
- Sample ID & collection date
- Not supplied
- Locality & supplier provenance
- Not supplied
- Sampling protocol & representativeness
- Not supplied
- Laboratory & accreditation scope
- Not supplied
- Certificate of analysis (CoA)
- Not supplied
- Product form, packaging & shelf life
- Not supplied
Handling & safety
Dust and trace-element assessment are required. Total P₂O₅ alone does not establish direct-application agronomic effectiveness.
Reference basis
FAO · Use of phosphate rocks for sustainable agriculture (2004) — material reference only
Mineralogical Society of America · Handbook of Mineralogy
Mineral identity and ideal chemical formulas; not Madagascar sample analyses.
FAO · Use of phosphate rocks for sustainable agriculture, Fertilizer and Plant Nutrition Bulletin 13 (2004)
Phosphate-rock mineralogy, characterisation and agronomic assessment.
Reference sheet only, not a certified product TDS, safety data sheet or certificate of analysis. No purity, grade, origin or supply commitment is certified.
02 / Continue your research
Related materials
REFERENCE SPECIMEN
REFERENCE SPECIMENHistorical catalogue reference
Graphite
C
Carbon materials & battery anodes
Explore materialMADAGASCAR · GEOLOGICAL CONTEXTHistorical catalogue reference
Mica
Variable; muscovite KAl₂(AlSi₃O₁₀)(OH)₂
Insulation & specialist fillers
Explore material