Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
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 ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Diadochite

A valid IMA mineral species - grandfathered
This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About DiadochiteHide

Formula:
Fe3+2(PO4)(SO4)(OH) · 6H2O
Colour:
Yellow to greenish-yellow or brown, reddish brown, light green, light yellow; pale yellow to yellowish brown in transmitted light.
Lustre:
Resinous, Waxy, Greasy, Dull, Earthy
Hardness:
3 - 4
Specific Gravity:
2.0 - 2.4
Crystal System:
Amorphous
Name:
Named in 1837 by Johann Friedric August Breithaupt from the Greek διάδοχος for "successor," presumably in allusion to its secondary origin.
An amorphous ferric iron phosphate-sulphate. Visually similar to destinezite, with which it was often confused, until destinezite was (re)defined as the crystalline equivalent of the amorphous diadochite. (IMA decision 00-E)

A secondary mineral occurring in gossans and coal deposits as the result of sulfate-rich solutions reacting with earlier phosphates; common in secondary phosphate assemblages in granitic pegmatites; in cave deposits, or as a post-mining product.


Unique IdentifiersHide

Mindat ID:
1279
Long-form identifier:
mindat:1:1:1279:5
GUID
(UUID V4):
af2c6307-91a6-4ce0-8621-0cc28a5267e5

IMA Classification of DiadochiteHide

Approved, 'Grandfathered' (first described prior to 1959)
First published:
1837

Classification of DiadochiteHide

8.DB.05

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
B : With only medium-sized cations, (OH, etc.):RO4< 1:1
Dana 7th ed.:
43.5.2.1
43.5.2.1

43 : COMPOUND PHOSPHATES, ETC.
5 : Hydrated Compound Phosphates, etc·, Containing Hydroxyl or Halogen
22.3.25

22 : Phosphates, Arsenates or Vanadates with other Anions
3 : Phosphates, arsenates or vanadates with sulphates

Mineral SymbolsHide

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

SymbolSourceReference
DdcIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of DiadochiteHide

Resinous, Waxy, Greasy, Dull, Earthy
Transparency:
Transparent, Translucent, Opaque
Comment:
Lustre dull in earthy material, waxy, horn-like in gel masses.
Colour:
Yellow to greenish-yellow or brown, reddish brown, light green, light yellow; pale yellow to yellowish brown in transmitted light.
Streak:
Yellow to yellow-brown
Hardness:
3 - 4 on Mohs scale
Hardness Data:
Measured
Tenacity:
Fragile
Cleavage:
None Observed
Fracture:
Conchoidal, Sub-Conchoidal
Density:
2.0 - 2.4 g/cm3 (Measured)    2.32 g/cm3 (Calculated)

Optical Data of DiadochiteHide

Type:
Biaxial (+)
RI values:
nα = 1.615 nβ = 1.618 - 1.638 nγ = 1.665 - 1.670 n = 1.60 - 1.61
2V:
Measured: 55°
Birefringence:
0.06
Max Birefringence:
δ = 0.050 - 0.055
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v strong
Pleochroism:
Non-pleochroic
Comments:
Isotropic when glassy. Measured 2V = small.

Chemistry of DiadochiteHide

Mindat Formula:
Fe3+2(PO4)(SO4)(OH) · 6H2O

Crystallography of DiadochiteHide

Crystal System:
Amorphous
Morphology:
Found as nodules or colloform crusts, massive; glassy, earthy.
Comment:
Amorphous to x-rays.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.74 Å(100)
8.28 Å(90)
4.377 Å(100)
4.082 Å(65)
3.929 Å(85)
2.942 Å(65)
2.918 Å(40)
Comments:
Also ICDD 42-1364

Geological EnvironmentHide

Paragenetic Mode(s):
Geological Setting:
Gossan deposits, coal deposits, late stage mineralization in granitic pegmatites, caves, post-mining deposition.

Type Occurrence of DiadochiteHide

General Appearance of Type Material:
Kidney-shaped and stalactite-like shapes.
Place of Conservation of Type Material:
Mining Academy, Freiberg, Saxony, Germany, number 20765.
Geological Setting of Type Material:
Slate altered by ground water, perhaps originally post-mine in occurrence.
Associated Minerals at Type Locality:

Synonyms of DiadochiteHide

Other Language Names for DiadochiteHide

Varieties of DiadochiteHide

GeldiadochiteA gel form of Diadochite

Common AssociatesHide

Associated Minerals Based on Photo Data:
8 photos of Diadochite associated with MitridatiteCa2Fe3+3(PO4)3O2 · 3H2O
8 photos of Diadochite associated with HydroxylapatiteCa5(PO4)3(OH)
6 photos of Diadochite associated with MesseliteCa2Fe2+(PO4)2 · 2H2O
6 photos of Diadochite associated with Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
4 photos of Diadochite associated with CacoxeniteFe3+24AlO6(PO4)17(OH)12 · 75H2O
3 photos of Diadochite associated with StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2O
3 photos of Diadochite associated with CassiteriteSnO2
2 photos of Diadochite associated with PurpuriteMn3+(PO4)
2 photos of Diadochite associated with MonaziteREE(PO4)
2 photos of Diadochite associated with Dickinsonite-(KMnNa)(KNa)(Mn2+◻)Ca(Na2Na)Mn2+13Al(PO4)11(PO4)(OH)2

Related Minerals - Strunz-mindat GroupingHide

8.DB.ArangasiteAl2F(PO4)(SO4) · 9H2O Mon. 2/m : P2/b
8.DB.Camaronesite[Fe3+(H2O)2(PO3OH)]2(SO4) · 1-2H2OTrig. 3 2 : R3 2
8.DB.HösliteFe3+3(VO4)2(SO4)(OH)(H2O)4 · 3H2OMon. 2/m : P21/b
8.DB.05Pitticite(Fe, AsO4, H2O) (?)Amor.
8.DB.05DestineziteFe3+2(PO4)(SO4)(OH) · 6H2OTric. 1 : P1
8.DB.07WilhelmgümbeliteZnFe2+Fe3+3(PO4)3(OH)4(H2O)5 · 2H2OOrth. mmm (2/m 2/m 2/m)
8.DB.07Schmidite[Zn2(Fe3+,Mn2+)2Fe3+(PO4)3(OH)3(H2O)6] · 2H2OOrth.
8.DB.07WildenaueriteZn(Fe3+,Mn2+)2MnFe3+(PO4)3(OH)3(H2O)6 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbam
8.DB.10VashegyiteAl11(PO4)9(OH)6 · 38H2OOrth. mmm (2/m 2/m 2/m)
8.DB.15SchooneriteZnMn2+Fe2+2Fe3+(PO4)3(OH)2 · 9H2OOrth. mmm (2/m 2/m 2/m) : Pbam
8.DB.20SinkankasiteMn2+Al(PO3OH)2(OH) · 6H2OTric. 1 : P1
8.DB.25MitryaevaiteAl6(PO4)((P,S)O3(OH,O))2F2(OH)2 · 14.5H2OTric. 1 : P1
8.DB.30SanjuaniteAl2(PO4)(SO4)(OH) · 9H2OTric.
8.DB.35SarmientiteFe3+2(AsO4)(SO4)(OH) · 5H2OMon. 2/m : P21/b
8.DB.40BukovskýiteFe3+2(AsO4)(SO4)(OH) · 9H2OTric. 1 : P1
8.DB.40FlurliteZn3Mn2+Fe3+(PO4)3(OH)2 · 9H2OMon. 2/m : P21/m
8.DB.40ManganflurliteZnMn2+3Fe3+(PO4)3(OH)2(H2O)7 · 2H2OMon. 2/m : P21/m
8.DB.42BohuslaviteFe3+4(PO4)3(SO4)(OH) · nH2OTric. 1 : P1
8.DB.45ZýkaiteFe3+4(AsO4)3(SO4)(OH) · 15H2OOrth. 2 2 2 : P2 2 2
8.DB.47LapeyreiteCu3O[AsO3(OH)]2 · 0.75H2OMon. 2/m : B2/m
8.DB.50GiniiteFe2+Fe3+4(PO4)3(OH)5 · 2H2OMon. 2/m : P2/b
8.DB.50RossiantoniteAl3(PO4)(SO4)2(OH)2(H2O)14Tric. 1 : P1
8.DB.52ArctowskiteAl9(PO4)8(OH)3 · 27H2OOrth.
8.DB.55Sasaite(Al,Fe3+)14(PO4)11(SO4)(OH)7 · 83H2OOrth.
8.DB.60McauslaniteFe3Al2(PO4)3(PO3OH)F · 18H2OTric.
8.DB.65GoldquarryiteCuCd2Al3(PO4)4F2(H2O,F)2 · 10H2OTric. 1 : P1
8.DB.70BirchiteCd2Cu2(PO4)2(SO4) · 5H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.DB.75BraithwaiteiteNaCu5(Ti4+Sb5+)(AsO4)4(HAsO4)2O2 · 8H2OTric. 1 : P1

Fluorescence of DiadochiteHide

Not fluorescent

Other InformationHide

Notes:
Readily soluble in acids.
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 DiadochiteHide

References for DiadochiteHide

Reference List:

Localities for DiadochiteHide

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.
Angola
 
  • Huíla Province
    • Jamba
      • Cassinga
Austria
 
  • Carinthia
    • Sankt Veit an der Glan District
      • Flattnitz
  • Lower Austria
    • Krems-Land District
      • Mühldorf
        • Amstall
  • Styria
    • Leoben District
      • Sankt Peter-Freienstein
Belgium
 
  • Wallonia
    • Hainaut
      • Bernissart
        • Blaton
    • Liège
      • Visé
    • Namur
      • Anhée
Bolivia
 
  • Oruro
    • Cercado Province
  • Potosí
    • Rafael Bustillo Province
      • Llallagua
Canada
 
  • Yukon
    • Dawson mining district
Czech Republic
 
  • Central Bohemian Region
    • Beroun District
    • Prague-West District
      • Nučice
  • Karlovy Vary Region
    • Karlovy Vary District
  • Pardubice Region
    • Pardubice District
France
 
  • Auvergne-Rhône-Alpes
    • Isère
      • Grenoble
        • Susville
          • Peychagnard
  • Brittany
    • Finistère
      • Châteaulin
        • Poullaouen
          • Locmaria-Berrien
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Gengenbach
          • Gengenbach
        • Oberwolfach
  • Bavaria
    • Lower Bavaria
      • Regen District
        • Zwiesel
          • Rabenstein
    • Upper Palatinate
      • Neustadt an der Waldnaab District
        • Pleystein
        • Waidhaus
  • North Rhine-Westphalia
    • Arnsberg
      • Hochsauerlandkreis
        • Arnsberg
          • Uentrop
    • Cologne
      • Euskirchen
  • Saxony
    • Erzgebirgskreis
  • Thuringia
    • Greiz District
      • Kauern
    • Saalfeld-Rudolstadt District
      • Probstzella
      • Saalfeld
        • Garnsdorf
        • Schmiedefeld
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion Mining District
          • Lophos
            • Agrileza mines
Hungary
 
  • Heves County
    • Gyöngyös District
    • Pétervására District
      • Recsk
Italy
 
  • Piedmont
    • Cuneo Province
      • Canosio
  • Sardinia
    • Metropolitan City of Cagliari
      • Capoterra
Japan
 
  • Yamaguchi Prefecture
    • Abu District
      • Abu town
Romania
 
  • Maramureș County
    • Baia Mare
Slovakia
 
  • Banská Bystrica Region
    • Banská Štiavnica District
    • Revúca District
      • Sirk
    • Žiar nad Hronom District
      • Kremnica
  • Bratislava Region
    • Pezinok District
      • Pezinok
  • Prešov Region
    • Prešov District
      • Červenica
        • Dubník
Spain
 
  • Extremadura
    • Cáceres
      • Zarza la Mayor
UK
 
  • England
    • Cornwall
      • Perranzabuloe
        • Perran Iron Lode (Great Perran Iron Lode)
USA
 
  • Arizona
    • Greenlee County
      • Morenci
  • Arkansas
    • Garland County
      • Wilson Springs (Potash Sulfur Springs)
    • Polk County
      • Shady
  • California
    • San Benito County
      • Idria (New Idria)
  • Colorado
    • Summit County
      • Montezuma Mining District (Snake River Mining District)
  • Connecticut
    • Middlesex County
      • East Hampton (Chatham)
        • Cobalt
  • Indiana
    • Pike County
  • Maine
    • Androscoggin County
      • Auburn
        • East Mount Apatite Mining District
    • Cumberland County
      • Baldwin
        • West Baldwin
    • Oxford County
      • Greenwood
        • Uncle Tom Mountain
      • Hebron
        • Mount Rubellite
      • Newry
      • Paris
      • Peru
      • Rumford
      • Stoneham
  • Massachusetts
    • Essex County
      • Andover
  • Nevada
    • Eureka County
      • Gibellini Mining District
        • Fish Creek Range
  • New Hampshire
    • Cheshire County
      • Alstead
      • Walpole
    • Grafton County
      • Groton
    • Strafford County
      • Farmington
      • Strafford
        • Parker Mountain
  • North Carolina
    • Cleveland County
  • Ohio
    • Coshocton County
      • Jackson Township
    • Perry County
  • Oklahoma
    • Ottawa County
  • South Dakota
    • Custer County
      • Custer Mining District
        • Fourmile
    • Pennington County
      • Keystone Gold Mining District
      • Keystone Mining District
        • Glendale
  • Tennessee
    • Hancock County
  • Utah
    • Emery County
      • Calf Mesa Mining District
 
Mineral and/or Locality  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 25, 2024 04:45:11 Page updated: November 8, 2023 21:53:02
Go to top of page