Kopylovite

Where it forms, where it's found

Type locality: Sloan No. 2 diatreme (Kopylovite Type Locality)
Sloan diatremes
State Line Kimberlite Mining District
Larimer County
Colorado
USA
40.8433°, -105.4533°

1recorded occurrences

Source · OpenStreetMap

Crystallography

Crystal system: Hexagonal
Space group: #108
Cell parameters: a = 6.7638(1) Å · c = 9.8934(2) Å

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 9 15.999 143.991
40.64%
14SiSilicon Silicon 3 28.085 84.255
23.78%
19KPotassium Potassium 2 39.098 78.196
22.07%
22TiTitanium Titanium 1 47.867 47.867
13.51%
Total 354.309 100.00%
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	9	15.999	143.991	40.64%
14SiSilicon	Silicon	3	28.085	84.255	23.78%
19KPotassium	Potassium	2	39.098	78.196	22.07%
22TiTitanium	Titanium	1	47.867	47.867	13.51%
	Total	354.309	100.00%

Synonyms

IMA2025-084
Kopyloviet

In other languages

Catalan: kopylovita

Classification

Strunz

10th ed.

9.CA

9SilicatesClass
9.CCyclosilicatesDivision
9.CA[Si₃O₉]₆- 3-membered single rings (dreier-Einfachringe), without insular complex anionsGroup
9.CAKopyloviteSpecies

Group, growth & confusion

4 members

1 mineral

WadeiteK₂ZrSi₃O₉
Mineral
—

Literature, links & citation

Citations

—Korolev, N., Kiseeva, E.S., Glazyrin, K., Ma, C. and Howarth, G.H. (2026) Kopylovite, IMA 2025-084. CNMNC Newsletter 89, Mineralogical Magazine, 90, https://doi.org/10.1180/mgm.2026.10199.

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Kopylovite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/kopylovite-499398},
  note      = {Accessed 2026-05-11}
}