Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography


This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About DavreuxiteHide

Creamy-white, pale rose pink
2 - 3
Crystal System:
Originally reported and described by de Koninck in 1878. Named after Belgian pharmacist, natural scientist, and Professor of Mineralogy at the University of Liège Charles Joseph Davreux (Liège, Belgium 10th September 1800 - Liège, Belgium 11th April 1863).
This page provides mineralogical data about Davreuxite.

Classification of DavreuxiteHide

Approved, 'Grandfathered' (first described prior to 1959)

9 : SILICATES (Germanates)
B : Sorosilicates
F : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in tetrahedral [4] and greater coordination

58 : SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
1 : Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [4] and higher coordination; single and double groups (n=1, 2)

16 : Silicates Containing Aluminum and other Metals
16 : Aluminosilicates of Mn

Physical Properties of DavreuxiteHide

Creamy-white, pale rose pink
2 - 3 on Mohs scale

Optical Data of DavreuxiteHide

Biaxial (-)
RI values:
nα = 1.660 nβ = 1.684 nγ = 1.690
Measured: 48° , Calculated: 52°
Max Birefringence:
δ = 0.030
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of DavreuxiteHide

IMA Formula:
Common Impurities:

Crystallography of DavreuxiteHide

Crystal System:
Cell Parameters:
a = 9.55 Å, b = 5.77 Å, c = 12.88 Å
β = 116.82°
a:b:c = 1.655 : 1 : 2.232
Unit Cell V:
633.39 ų (Calculated from Unit Cell)

Type Occurrence of DavreuxiteHide

General Appearance of Type Material:
fibrous masses in quartz veins, in close association with pyrophyllite and kaolinite.
Place of Conservation of Type Material:
Royal Belgium Institute of Natural Sciences, Brussels
Mineralogical Museum University of Wroclaw, Poland

Other Language Names for DavreuxiteHide

Related Minerals - Nickel-Strunz GroupingHide

9.BF.10SamfowleriteCa28Mn6Zn4(Be,Zn)4Be12[(OH)3(SiO4)3(Si2O7)2]4Mon. 2/m : P21/b
9.BF.20QueititePb4Zn2(SO4)(SiO4)(Si2O7)Mon. 2 : P21

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.16.1KanonaiteMn3+Al(SiO4)OOrth. mmm (2/m 2/m 2/m) : Pnnm
16.16.2SpessartineMn2+3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
16.16.4SursassiteMn2+2Al3(SiO4)(Si2O7)(OH)3Mon. 2/m : P21/m
16.16.6KellyiteMn2+2Al(AlSiO5)(OH)4Hex. 6 : P63
16.16.9Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2OMon.
16.16.14Eggletonite(Na,K,Ca)2(Mn,Fe)8(Si,Al)12O29(OH)7 · 11H2OMon.
16.16.15Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2OMon. 2/m : B2/b
16.16.17ZussmaniteK(Fe,Mg,Mn)13(Si,Al)18O42(OH)14Trig. 3 : R3
16.16.19HenritermieriteCa3(Mn3+,Al)2(SiO4)2(OH)4Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
16.16.22Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
16.16.23OkhotskiteCa2Mn3+Mn3+2(Si2O7)(SiO4)(OH)2 · H2OMon.
16.16.24Pumpellyite-(Mn2+)Ca2Mn2+Al2(Si2O7)(SiO4)(OH)2 · H2OMon.

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.

References for DavreuxiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
de Koninck, L. L. (1878): Sur la davreuxite, espèce nouvelle recueillie dans les filons de quartz du terrain ardennais. Bulletin de l'Académie Royale de Belgique, Série II, 46, 240-245.
Bull. Soc. Franç. Minéral. Cristallogr. (1886) 9, 4-6.
Fransolet, A. M. & Bourguignon, P. (1976): Mineralogical data on davreuxite. Comptes Rendus des Seances de l'Académie des Sciences, Série D: Sciences Naturelles 283(4), 295-297 (in French).
Amer. Mineral., 63, 795.
Fransolet, A.M., Abraham, K., Sahl, K. (1984): Davreuxite: a reinvestigation. American Mineralogist 69, 777-782.
Sahl, K., Jones, P.G., Sheldrick, G.M. (1984): The crystal structure of davreuxite, MnAl6Si4O17(OH)2. Am Mineral 69, 783-787.
Amer. Mineral. (1984) 69, 1198.
Van Der Meersche, E., De Paepe, P., and Stoops, G., 2010. Minerals with Belgian Roots, from hopeite (1824) to tazieffite (2009). Academia Press, Gent for the Museum for the History of Sciences, 232 pp.

Internet Links for DavreuxiteHide

Localities for DavreuxiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Wallonia
    • Liège
      • Sankt-Vith
    • Luxembourg
Michel Blondieau.; Hatert, F., Deliens, M., Fransolet, A.-M., Van Der Meersche, E. (2002) Les minéraux de Belgique. 2ème édition, Muséum des Sciences Naturelles, Bruxelles, Belgium, 304 pages (in French).
H.J. Wilke collection
        • Cahai (Cahay)
Hatert, F., Deliens, M., Fransolet, A.-M. & van der Meersche, E. (2002): Les minéraux de Belgique. 2ème édition, Muséum des Sciences Naturelles, Bruxelles, Ed., 304 p.
Bull.Acad.roy.Sci.Belg., 2nd ser.(1876) 46, 240-245
Hatert, F., Deliens, M., Fransolet, A.-M., Van Der Meersche, E. (2002) Les minéraux de Belgique. 2ème édition, Muséum des Sciences Naturelles, Bruxelles, Belgium, 304 pages (in French).
Hatert, F., Deliens, M., Fransolet, A.-M., Van Der Meersche, E. (2002) Les minéraux de Belgique. 2ème édition, Muséum des Sciences Naturelles, Bruxelles, Belgium, 304 pages (in French).
- Blondieau, M. (2005): Les gisements minéraux du Salmien dans le massif de Stavelot. Published by M. Blondieau, Tellin, Belgium, 90 pp.
  • Saxony-Anhalt
    • Harz
      • Wippra Metamorphic Zone
        • Mansfeld
Gunnar Färber
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2020, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: February 16, 2020 18:57:54 Page generated: February 12, 2020 09:52:28
Go to top of page