Grahampearsonite

Where it forms, where it's found

Type locality: Chapadão mine
Juína
Mato Grosso
Brazil
-11.4478°, -58.9367°

1recorded occurrences

Source · OpenStreetMap

Crystallography

Crystal system: Tetragonal
Space group: #132
Cell parameters: a = 6.697(2) Å · c = 24.145(11) Å

Crystal structure

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 7 15.999 111.993
44.07%
20CaCalcium Calcium 2 40.078 80.156
31.55%
15PPhosphorus Phosphorus 2 30.974 61.948
24.38%
Total 254.097 100.00%
Mass share = atoms × atomic mass ÷ molar mass × 100
From Mindat formula

Mass composition breakdown
Element	Atoms	At. mass g/mol	Mass g/mol	Mass share
8OOxygen	Oxygen	7	15.999	111.993	44.07%
20CaCalcium	Calcium	2	40.078	80.156	31.55%
15PPhosphorus	Phosphorus	2	30.974	61.948	24.38%
	Total	254.097	100.00%

Synonyms

Grahampearsoniet
IMA2025-017

In other languages

German: Grahampearsonit · IMA 2025-017

Classification

Strunz

10th ed.

8.FA

8Phosphates, Arsenates, VanadatesClass
8.FPolyphosphates, Polyarsenates, [4]-PolyvanadatesDivision
8.FAPolyphosphates, etc., without OH and H₂O; dimers of corner-sharing RO₄ tetrahedra.Group
8.FAGrahampearsoniteSpecies

Literature, links & citation

Citations

—Wang, Y., Nestola, F., Day, M.C., Jalowitzki, T., Novais-Rodrigues, E., Gervasoni, F., Grings Cedeño, D., William da Silva, S., Fuck, R.A., Nava, J., Santello, L., Pamato, M.G., Novella, D., Innocenzi, F., Curtolo, A., La Fortezza, M. and Qu, K. (2025) Grahampearsonite, IMA 2025-017. CNMNC Newsletter 86, Mineralogical Magazine, 89

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Grahampearsonite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/grahampearsonite-488800},
  note      = {Accessed 2026-05-11}
}