Nigelcookite (original) (raw)

A valid IMA mineral species - pending publication

Formula:

PbFe2+2V3+2(PO4)3(OH)3

Colour:

dark brown to greenish brown

Specific Gravity:

4.57 (Calculated)

Crystal System:

Monoclinic

Name:

Nigelcookite is named in honor of Professor Nigel Cook, a mineralogist-geologist with research interests in complex ore deposits, sulfide mineralogy, geochemistry, critical minerals, mineral processing and geometallurgy. His research career lies at the interface of mineralogy, geochemistry, and mineral processing, and he is internationally recognized for his significant contribution to the interpretation and implications of mineral chemistry data.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:471060:4

IMA Classification of NigelcookiteHide

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Approved, Pending publication

Type description reference:

Yao, Wei, Liu, Peng, Li, Guowu, Sun, Ningyue, Yang, Wenqiang, Zhang, Chao, Song, Wenlei (2025) Nigelcookite, PbFe2+2V3+2(PO4)3(OH)3, and plumbojohntomaite PbFe2+2Fe3+2(PO4)3(OH)3 two new members of the bjarebyite group from the Yushui Cu deposit, South China. American Mineralogist. doi:10.2138/am-2024-9586

Classification of NigelcookiteHide

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8.BH.20

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1

Mineral SymbolsHide

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

Physical Properties of NigelcookiteHide

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Transparency:

Transparent, Translucent

Colour:

Dark brown to greenish brown

Fracture:

Irregular/Uneven

Density:

4.57 g/cm3 (Calculated)

Optical Data of NigelcookiteHide

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Comments:

X = greenish brown, Y = brown, Z = dark brown.

Chemistry of NigelcookiteHide

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Mindat Formula:

PbFe2+2V3+2(PO4)3(OH)3

Crystallography of NigelcookiteHide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 9.1159(5) Å, b = 12.2328(7) Å, c = 5.0092(3) Å
β = 100.708(6)°

Ratio:

a:b:c = 0.745 : 1 : 0.409

Unit Cell V:

548.86 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Type Occurrence of NigelcookiteHide

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General Appearance of Type Material:

spearhead-shaped or platy crystals ranging from 5 to 100 μm in size

Place of Conservation of Type Material:

Type material is deposited in the collections of the Geological Museum of China, Yangrou Hutong No. 16, Xisi, Beijing 100031, People's Republic of China, catalogue number GMCTM2023010

Geological Setting of Type Material:

in the bedded/massive Cu ore

Associated Minerals at Type Locality:

Reference:

Yao, Wei, Liu, Peng, Li, Guowu, Sun, Ningyue, Yang, Wenqiang, Zhang, Chao, Song, Wenlei (2025) Nigelcookite, PbFe2+2V3+2(PO4)3(OH)3, and plumbojohntomaite PbFe2+2Fe3+2(PO4)3(OH)3 two new members of the bjarebyite group from the Yushui Cu deposit, South China. American Mineralogist. doi:10.2138/am-2024-9586

Relationship of Nigelcookite to other SpeciesHide

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Other Members of Bjarebyite Group:

Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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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 NigelcookiteHide

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References for NigelcookiteHide

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Reference List:

Yao, W., Liu, P., Li, G., Sun, N., Yang, W., Song, W., and Zhang, C.: Nigelcookite, IMA 2023-113, in: CNMNC Newsletter 78, Eur. J. Mineral., 36, https://doi.org/10.5194/ejm-36-361-2024, 2024.

Yao, Wei, Liu, Peng, Li, Guowu, Sun, Ningyue, Yang, Wenqiang, Zhang, Chao, Song, Wenlei (2025) Nigelcookite, PbFe2+2V3+2(PO4)3(OH)3, and plumbojohntomaite PbFe2+2Fe3+2(PO4)3(OH)3 two new members of the bjarebyite group from the Yushui Cu deposit, South China. American Mineralogist. doi:10.2138/am-2024-9586

Localities for NigelcookiteHide

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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

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- 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.