Named in honor of Chu Kochen (also written Chu Coching, 竺可桢) (7 March 1890, Shangyu, Shaoxing, Zhejiang, China – 7 February 1974, Beijing, China), meteorologist and geologist. He was president of Zhejiang University (1936-1949) and one of the founders of earth sciences in China. In 1949 he became vice president of the Chinese Academy of Sciences.

Type Locality:

ⓘ Xianghualing Sn-polymetallic ore field, Linwu Co., Chenzhou, Hunan, China

The first lithium aluminate mineral. Compare, e.g., diaoyudaoite.

New structure type.

A cubic polymorph is known as a synthetic compound and has applications in several fields.

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Unique IdentifiersHide

Mindat ID:

54350

Long-form identifier:

mindat:1:1:54350:1

GUID
(UUID V4):

a64471a4-f954-4c26-b8dd-b25055f32ef9

IMA Classification of ChukocheniteHide

IMA status:

Approved

IMA Formula:

(Li_0.5Al_0.5)Al₂O₄

Approval year:

2020

First published:

2022

Classification of ChukocheniteHide

Strunz-mindat (2024):

4.BB.

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
B : Metal: Oxygen = 3:4 and similar
B : With only medium-sized cations

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference
Ckc	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of ChukocheniteHide

Lustre:

Vitreous

Transparency:

Transparent

Colour:

colorless

Hardness:

8 on Mohs scale

Tenacity:

Brittle

Fracture:

Irregular/Uneven

Density:

3.771 g/cm³ (Calculated)

Optical Data of ChukocheniteHide

Type:

Biaxial (-)

RI values:

n_α = 1.790(2) n_β = 1.820(2) n_γ = 1.830(2)

2V:

Calculated: 60°

Max Birefringence:

δ = 0.040

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

Very High

Chemistry of ChukocheniteHide

Mindat Formula:

LiAl₅O₈

Elements listed:

Al, Li, O - search for minerals with similar chemistry

Crystallography of ChukocheniteHide

Crystal System:

Orthorhombic

Class (H-M):

mmm (2/m 2/m 2/m) - Dipyramidal

Space Group:

Imma

Setting:

Imma

Cell Parameters:

a = 5.642(1) Å, b = 16.827(2) Å, c = 8.014(1) Å

Ratio:

a:b:c = 0.335 : 1 : 0.476

Unit Cell V:

760.83 Å³ (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.404 Å	(53)
1.538 Å	(77)
1.412 Å	(100)
1.256 Å	(52)
1.068 Å	(36)
1.040 Å	(61)
0.999 Å	(59)
0.942 Å	(35)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 4a: Earth’s earliest continental crust	>4.4-3.0
19 : Granitic intrusive rocks
Stage 4b: Highly evolved igneous rocks	>3.0
34 : Complex granite pegmatites

Type Occurrence of ChukocheniteHide

Type Locality:

ⓘ Xianghualing Sn-polymetallic ore field, Linwu Co., Chenzhou, Hunan, China

General Appearance of Type Material:

euhedral crystals to 200 microns

Place of Conservation of Type Material:

mineralogical collections of the Geological Museum of China, no. 15 Yangrou Hutong, Xisi, Beijing 100031, People's Republic of China, catalogue number M13818

Geological Setting of Type Material:

hydrothermal veins in skarn

Associated Minerals at Type Locality:

Phlogopite	Fluorite	Chrysoberyl	Chrysoberyl	Chlorite Group
Chlorite Group	Chlorite Group

Related Minerals - Strunz-mindat Grouping Hide

4.BB.	Elgoresyite	(Mg₅Si₂)O₉	Mon. 2/m : B2/m
4.BB.	Chenmingite	FeCr₂O₄	Orth. mmm (2/m 2/m 2/m) : Pnma
4.BB.	Dellagiustaite	V²⁺Al₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.	Thermaerogenite	CuAl₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.	Garpenbergite	Mn₆◻AsSbO₁₀(OH)₂	Orth. mmm (2/m 2/m 2/m)
4.BB.	Magnéliite	Ti³⁺₂Ti⁴⁺₂O₇	Tric. 1 : P1
4.BB.	Jianmuite	ZrTi⁴⁺Ti³⁺₅Al₃O₁₆	Tet. 4 : I4
4.BB.05	Chromite	Fe²⁺Cr³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Cochromite	CoCr₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Coulsonite	Fe²⁺V³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Cuprospinel	Cu²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m)
4.BB.05	Filipstadite	(Fe³⁺_0.5Sb⁵⁺_0.5)Mn₂O₄	Iso.
4.BB.05	Franklinite	Zn²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Gahnite	ZnAl₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Galaxite	Mn²⁺Al₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Hercynite	Fe²⁺Al₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Jacobsite	Mn²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Manganochromite	Mn²⁺Cr₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Magnesiocoulsonite	MgV₂O₄	Iso. m3m (4/m 3 2/m)
4.BB.05	Magnesiochromite	MgCr₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Magnesioferrite	MgFe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Magnetite	Fe²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Nichromite	(Ni,Co,Fe)(Cr,Fe,Al)₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Qandilite	(Mg,Fe³⁺)₂(Ti,Fe³⁺,Al)O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Spinel	MgAl₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Trevorite	Ni²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Ulvöspinel	TiFe²⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Vuorelainenite	Mn²⁺V³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Zincochromite	ZnCr₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Harmunite	CaFe₂O₄	Orth. mmm (2/m 2/m 2/m) : Pbcm
4.BB.05	Wernerkrauseite	Ca(Fe³⁺,Mn³⁺)₂Mn⁴⁺O₆	Orth. mmm (2/m 2/m 2/m) : Pnma
4.BB.05	Deltalumite	(Al_0.67◻_0.33)Al₂O₄	Tet. 4 2m : P4m2
4.BB.05	Guite	Co²⁺Co³⁺₂O₄	Iso.
4.BB.10	Hausmannite	Mn²⁺Mn³⁺₂O₄	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/amd
4.BB.10	Hetaerolite	ZnMn₂O₄	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/amd
4.BB.10	Manganostibite	(Mn,Fe)₇SbAsO₁₂	Orth. mmm (2/m 2/m 2/m)
4.BB.15	Maghemite	(Fe³⁺_0.67◻_0.33)Fe³⁺₂O₄	Iso. 4 3 2 : P4₁ 3 2
4.BB.15	Titanomaghemite	(Ti⁴⁺_0.5◻_0.5)Fe³⁺₂O₄	Iso. 4 3 2 : P4₃ 3 2
4.BB.20	Tegengrenite	(Mn³⁺_0.5Sb⁵⁺_0.5)Mg₂O₄	Trig. 3 : R3
4.BB.25	Xieite	Fe²⁺Cr₂O₄	Orth. mmm (2/m 2/m 2/m)
4.BB.30	Carmeltazite	ZrAl₂Ti₄O₁₁	Orth. mmm (2/m 2/m 2/m) : Pnma
4.BB.35	Feiite	Fe²⁺₂(Fe²⁺Ti⁴⁺)O₅	Orth. mmm (2/m 2/m 2/m) : Cmcm
4.BB.40	Maohokite	MgFe₂O₄	Orth. mmm (2/m 2/m 2/m) : Pnma
4.BB.45	Tschaunerite	(Fe²⁺)(Fe²⁺Ti⁴⁺)O₄	Orth. mmm (2/m 2/m 2/m) : Cmcm

Fluorescence of ChukocheniteHide

In UV light:

red - 253nm
light green 365nm

Other InformationHide

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for ChukocheniteHide

mindat.org URL:

https://www.mindat.org/min-54350.html
Please feel free to link to this page.

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for ChukocheniteHide

Reference List:

Famery, R., Queyroux, F., Gilles, J.C., Herpin, P. (1979) Etude structurale de la forme ordonnée de LiAl5O8. Journal of Solid State Chemistry: 30: 257-263.

Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2020) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) - Newsletter 54. European Journal of Mineralogy, 32 (2) 275-283 doi:10.5194/ejm-32-275-2020

Rao, C., Gu, X., Wang, R., Xia, Q., Cai, Y., Dong, C., Hatert, F., Hao, Y. (2020) Chukochenite, (Li_0.5Al_0.5)Al₂O₄, a new lithium oxyspinel mineral from the Xianghualing skarn, Hunan Province, China. American Mineralogist 107(5): 842–847. https://doi.org/10.2138/am-2021-7932

(2023) Chukochenite. Handbook of Mineralogy. Mineralogical Society of America

Localities for ChukocheniteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

symbol to view information about a locality. The

symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.

China (TL)

Hunan

Chenzhou

Linwu Co.

ⓘ Xianghualing Sn-polymetallic ore field (TL)

Miyawaki et al. (2020) +1 other reference

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Chukochenite