Zaïrite (original) (raw)

A valid IMA mineral species

About ZaïriteHide

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Formula:

BiFe3+3(PO4)2(OH)6

Colour:

Green, light olive green

Specific Gravity:

4.42 (Calculated)

Name:

Named by L. van Wambeke in 1975 after the country in which it was first discovered, Zaïre (now the Democratic Republic of the Congo).

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:4382:9

2d4d5027-1a2a-47dc-8a12-e006773cee8a

IMA Classification of ZaïriteHide

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Type description reference:

Classification of ZaïriteHide

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8.BL.13

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
L : With medium-sized and large cations, (OH, etc.):RO4 = 3:1

41.5.12.3

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq

19.14.33

19 : Phosphates
14 : Phosphates of Fe and other metals

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 ZaïriteHide

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Colour:

Green, light olive green

Fracture:

Irregular/Uneven

Density:

4.42 g/cm3 (Calculated)

Optical Data of ZaïriteHide

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RI values:

_n_ω = 1.820 - 1.830 _n_ε = 1.810

Birefringence:

Weak to moderate

δ = 0.010 - 0.020

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

Chemistry of ZaïriteHide

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Mindat Formula:

BiFe3+3(PO4)2(OH)6

Common Impurities:

Ca,Cu,Ba,S,Si,Te

Crystallography of ZaïriteHide

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Class (H-M):

3_m_ _(_32/m ) - Hexagonal Scalenohedral

Cell Parameters:

a = 7.015 Å, c = 16.365 Å

Unit Cell V:

697.43 ų (Calculated from Unit Cell)

Morphology:

Found as irregular intersecting plates (<1 mm), perhaps fracture fillings with original mineral dissolved away.

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of ZaïriteHide

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General Appearance of Type Material:

Medium to light olive green irregular plates.

Place of Conservation of Type Material:

Royal Museum of Central Africa, Tervuren, Belgium, RMG14065.

Geological Setting of Type Material:

Associated Minerals at Type Locality:

Reference:

van Wambeke, L. (1975) La zairite, un nouveau minéral appartenant à la serie de la crandallite. Bulletin de la Société française de Minéralogie et de Cristallographie: 98: 351-353.

Synonyms of ZaïriteHide

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Other Language Names for ZaïriteHide

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Relationship of Zaïrite to other SpeciesHide

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Other Members of this group:

Common AssociatesHide

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Associated Minerals Based on Photo Data:

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 ZaïriteHide

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References for ZaïriteHide

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Reference List:

MORIMITSU, Yuma, SHIROSE, Yohei, ENJU, Satomi, TSURUTA, Kenji, SHIMOBAYASHI, Norimasa (2021) Zaïrite in quartz veins from Ishidera area, Wazuka, Kyoto Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 116 (2) 104-107 doi:10.2465/jmps.201130d

Localities for ZaïriteHide

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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.

Bolivia
Potosí Nor Chichas Province Cerro Tazna Tasna Rosario ⓘ Tazna Mine (Tasna Mine; Tazna-Rosario Mine)	Joy Desor analyses by Raman and SEM-EDS.
Canada
New Brunswick Charlotte Co. Saint George Parish ⓘ Mount Pleasant Mine	McClenaghan et al. (2015)
DR Congo (TL)
North Kivu Lubero Territory Bapere ⓘ Eta-Etu (TL)	Van Wambeke (1975)
Germany
Bavaria Upper Palatinate Neustadt an der Waldnaab District Pleystein ⓘ Kreuzberg (Rose quartz cliff)	Dill et al. (2009)
Japan
Kyoto Prefecture Soraku District Wazuka-cho ⓘ Ishidera	MORIMITSU et al. (2021)
Portugal
Guarda Gouveia Folgosinho ⓘ Sítio do Castelo Mine	Alves (2016)