Davemaoite

Where it forms, where it's found

Type locality: AK-8 kimberlite pipe
Orapa
Letlhakane
Central District
Botswana
-21.3000°, 25.4000°

2recorded occurrences

Source · OpenStreetMap

Crystallography

Crystal system: Isometric
Space group: Pm-3m
Cell parameters: a = 3.591(2) Å
Type-locality form: As inclusions in a diamond.

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 3 15.999 47.997
41.32%
20CaCalcium Calcium 1 40.078 40.078
34.50%
14SiSilicon Silicon 1 28.085 28.085
24.18%
Total 116.160 100.00%
Mass share = atoms × atomic mass ÷ molar mass × 100
From IMA formula

Mass composition breakdown
Element	Atoms	At. mass g/mol	Mass g/mol	Mass share
8OOxygen	Oxygen	3	15.999	47.997	41.32%
20CaCalcium	Calcium	1	40.078	40.078	34.50%
14SiSilicon	Silicon	1	28.085	28.085	24.18%
	Total	116.160	100.00%

Synonyms

Davemaoiet
IMA2020-012a

In other languages

French: Davemaoïte · IMA2020-012a
German: Davemaoit · IMA 2020-012a
Italian: davemaoite
Portuguese: Davemaoíta
Japanese: デイヴマオイト · デイブマオイト
Chinese: 毛钙硅石

Classification

Strunz

10th ed.

9.H0

9SilicatesClass
9.HUnclassified silicatesDivision
9.H0— unnamed intermediate level —Group
9.H0DavemaoiteSpecies

Group, growth & confusion

1 members

BridgmaniteMgSiO₃
Mineral
—

3 minerals

Literature, links & citation

Citations

—Dera, P., Rapp, R., Chornkrathok, S., Zhang, D., Prakapenka, V.B., Woźniak, K. (2023). New high-pressure phase of CaSiO₃ wollastonite with penta-coordinated silicon. 9th Meeting of the Mineralogical Society of Poland / 28th Meeting of the Petrology group of the Mineralogical Society of Poland, "Oceanic lithosphere: rocks, minerals, and critical resources", October 19-22, Bielawa, Poland. Mineralogia - Special Papers, 51, 51.
2020Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2020) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 58. European Journal of Mineralogy, 32 (6) 645-651 doi:10.5194/ejm-32-645-2020 DOI: 10.5194/ejm-32-645-2020
2021Tschauner, Oliver, Huang, Shichun, Yang, Shuying, Humayun, Munir, Liu, Wenjun, Gilbert Corder, Stephanie N, Bechtel, Hans A., Tischler, Jon, Rossman, George R. (2021) Discovery of davemaoite, CaSiO₃-perovskite, as a mineral from the lower mantle. Science, 374 (6569). 891-894 doi:10.1126/science.abl8568DOI: 10.1126/science.abl8568
2022(2022) Davemaoite. Handbook of Mineralogy. Mineralogical Society of America
2023Pushcharovsky, D. Yu. (2023) Structural Transformations of Minerals in the Earth’s Mantle: the New High Pressure Polymorphous Modifications of Olivine and Wollastonite. Zapiski RMO (Proceedings of the Russian Mineralogical Society) 5, 66-82 doi:10.31857/s0869605523050064DOI: 10.31857/s0869605523050064

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Davemaoite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/davemaoite-55255},
  note      = {Accessed 2026-05-11}
}