Yang Xiuzhen, Li Deren, Wang Guanxin, Deng Mengxiang, Chen Nansheng, and Wang Shuzhen (1989): A study of chiluite - A new mineral found in Chilu, Fujian, China. Acta Mineralogica Sinica 9(1), 9-14 (in Chinese with English abstract).

Classification of ChiluiteHide

Strunz-mindat (2024):

7.BD.55

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H₂O
D : With only large cations

Dana 8th ed.:

7.11.13.1

7 : MULTIPLE OXIDES
11 : Miscellaneous

Hey's CIM Ref.:

7.17.4

7 : Oxides and Hydroxides
17 : Oxides of Se and Te

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
Cil	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 ChiluiteHide

Transparency:

Translucent

Colour:

Yellow

Hardness:

3 on Mohs scale

Hardness:

VHN₁₀=108 kg/mm² - Vickers

Density:

3.65 g/cm³ (Measured) 3.67 g/cm³ (Calculated)

Optical Data of ChiluiteHide

Type:

Uniaxial (-)

RI values:

n_ω = 2.400(1) n_ε = 2.300(1)

Max Birefringence:

δ = 0.100

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

Surface Relief:

Very High

Anisotropism:

Weak

Bireflectance:

None

Optical Extinction:

Parallel extinction

Reflectivity:

Wavelength	R₁	R₂
410nm	19.45%	20.75%
430nm	19.25%	20.45%
450nm	18.80%	20.00%
470nm	18.40%	19.50%
490nm	18.00%	18.90%
510nm	17.75%	18.60%
530nm	17.50%	18.40%
550nm	17.25%	18.25%
570nm	17.00%	18.05%
590nm	16.75%	17.80%
610nm	16.65%	17.60%
630nm	16.50%	17.40%
650nm	16.45%	17.30%
670nm	16.30%	17.20%
690nm	16.15%	17.00%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 20.75%.
R₁ shown in black, R₂ shown in red

Colour in reflected light:

Gray

Internal Reflections:

Gray-brown

Comments:

Negative elongation.

Chemistry of ChiluiteHide

Mindat Formula:

Bi₃Te⁶⁺Mo⁶⁺O_10.5

Elements listed:

Bi, Mo, O, Te - search for minerals with similar chemistry

Crystallography of ChiluiteHide

Crystal System:

Hexagonal

Cell Parameters:

a = 8.97 Å, c = 12.2 Å

Ratio:

a:c = 1 : 1.36

Unit Cell V:

850.11 Å³ (Calculated from Unit Cell)

Comment:

Point Group: 622, 6/m, or 6.; Space Group: P6322, P63m, or P63.

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.30 Å	(100)
3.05 Å	(90)
2.51 Å	(50
2.06 Å	(50)
1.655 Å	(50)
2.88 Å	(40)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Near-surface Processes
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)
High-𝑇 alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of ChiluiteHide

Type Locality:

ⓘ Chilu Mo deposit, Fu'an Co., Ningde, Fujian, China

General Appearance of Type Material:

Plumose replacements in joseite inclusions in bismuthinite; as veinlets and as irregular to hexagonal isolated grains isolated in bismuthinite; as a rim on koechlinite, the exterior having a hexagonal outline. Grain size generally 10-20 µm (maximum 42 µm).

Place of Conservation of Type Material:

National Museum for Geology, Beijing, China, number M09636.

Geological Setting of Type Material:

In quartz veins in a bismuth deposit.

Associated Minerals at Type Locality:

Quartz	Molybdenite	Joséite	Joséite	Cassiterite
Bismuthinite

Reference:

Synonyms of ChiluiteHide

IMA1988-001

Other Language Names for ChiluiteHide

German:Chiluit

Simplified Chinese:赤路矿

Spanish:Chiluita

Traditional Chinese:赤路礦

Related Minerals - Strunz-mindat Grouping Hide

7.BD.	Adanite	Pb₂(Te⁴⁺O₃)(SO₄)	Mon. 2/m : P2₁/b
7.BD.	Hasanovite	KNa(MoO₂)(SO₄)₂	Mon. 2/m : P2₁/b
7.BD.	Evanichite	Pb₆Cr³⁺(Cr⁶⁺O₄)₂(SO₄)(OH)₇FCl	Trig. 3 : P3
7.BD.	Kennygayite	[Pb₄O₂(OH)₂](SO₄)	Tric. 1 : P1
7.BD.05	Sulphohalite	Na₆(SO₄)₂FCl	Iso. m3m (4/m 3 2/m) : Fm3m
7.BD.10	Galeite	Na₁₅(SO₄)₅F₄Cl	Trig. 3m : P3 1m
7.BD.10	Schairerite	Na₂₁(SO₄)₇ClF₆	Trig. 3m : P3 1m
7.BD.15	Kogarkoite	Na₃(SO₄)F	Mon. 2/m : P2₁/m
7.BD.20	Caracolite	Na₃Pb₂(SO₄)₃Cl	Mon. 2/m : P2₁/m
7.BD.20	Cesanite	Na₃Ca₂(SO₄)₃(OH)	Hex. 6 : P6
7.BD.20	Aiolosite	Na₄Bi(SO₄)₃Cl	Hex. 6/m : P6₃/m
7.BD.25	Burkeite	Na₆(CO₃)(SO₄)₂	Orth.
7.BD.30	Hanksite	Na₂₂K(SO₄)₉(CO₃)₂Cl	Hex. 6/m : P6₃/m
7.BD.35	Cannonite	Bi₂(SO₄)O(OH)₂	Mon. 2/m : P2₁/b
7.BD.40	Lanarkite	Pb₂(SO₄)O	Mon. 2/m : B2/m
7.BD.45	Grandreefite	Pb₂(SO₄)F₂	Mon. 2/m
7.BD.50	Itoite	Pb₃Ge⁴⁺(SO₄)₂O₂(OH)₂	Orth. mmm (2/m 2/m 2/m) : Pnma
7.BD.60	Hectorfloresite	Na₉(SO₄)₄(IO₃)	Mon. 2/m : P2₁/b
7.BD.65	Pseudograndreefite	Pb₆(SO₄)F₁₀	Orth. 2 2 2 : F2 2 2
7.BD.70	Sundiusite	Pb₁₀(SO₄)O₈Cl₂	Mon.

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 ChiluiteHide

mindat.org URL:

https://www.mindat.org/min-1004.html
Please feel free to link to this page.

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External Links:

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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 ChiluiteHide

Reference List:

Jambor, John L., Puziewicz, Jacek (1991) New Mineral Names. American Mineralogist, 76 (3-4) 665-671

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

Localities for ChiluiteHide

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)

Fujian

Ningde

Fu'an Co.

ⓘ Chilu Mo deposit (TL)

Yang Xiuzhen et al. (1989)

Chiluite

Unique IdentifiersHide

IMA Classification of ChiluiteHide