SUPPORT US. Covid-19 has significantly affected our fundraising. Please help!
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 SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew 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 StrontiomelaneHide

4 - 4½
Specific Gravity:
4.66 (Calculated)
Crystal System:
Named in 1999 by Nicolas Meisser, Elena-Adriana Perseil, Joel Brugger, Pierre-Jaques Chiappero of the presence of strontium and the black color, μελανός in Greek.
Coronadite Group. Many manganese oxides are better identified using infra-red spectroscopy than by x-ray diffraction because of issues of crystal size, disorder, etc. (Potter and Rossman, 1979).

Classification of StrontiomelaneHide


4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
K : With large (+- medium-sized) cations; tunnel structures

Physical Properties of StrontiomelaneHide

Sepia, brown
4 - 4½ on Mohs scale
VHN100=398 kg/mm2 - Vickers
4.66 g/cm3 (Calculated)
Natural material unsuitable for physical measurement

Chemical Properties of StrontiomelaneHide

Common Impurities:

Crystallography of StrontiomelaneHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 10.00 Å, b = 5.758 Å, c = 9.881 Å
a:b:c = 1.737 : 1 : 1.716
Unit Cell V:
0.00 ų (Calculated from Unit Cell)
Black elongated inclusions (100-200 μm) in black braunite, quartz, violan, or strontiopiemontite.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
7.02 Å(l0)
4.96 Å(30)
3.52 Å(30)
3.50 Å(30)
3.15 Å(100)
3.13 Å(80)
2.86 Å(5)
2.75 Å(30)
2.504 Å(5)
2.481 Å(>5)
2.409 Å(80)
2.229 Å(40)
2.217 Å(30)
2.170 Å(60)
1.997 Å(10)
1.982 Å(5)
1.937 Å(5)
l.855 Å(30)
1.843 Å(30)
1.772 Å(>5)
1.749 Å(>5)
1.702 Å(5)
1.668 Å(20)
1.648 Å(20)
1.556 Å(50)
1.436 Å(20)
1.369 Å(20)
1.355 Å(20)
1.303 Å(20)
Meisser, Perseil, Brugger, and Chiappero (1999)

Type Occurrence of StrontiomelaneHide

General Appearance of Type Material:
Strontiomelane occurs as thin (100-200 pm), submetallic, black, elongate xenomorphic inclusions commonly aggregated with braunite in quartz and,
more rarely, in violet pyroxene (variety
"violan" of diopside-aegirine-jadeite) and in strontiopiemontite.
Geological Setting of Type Material:
Manganese-enriched horizons are embedded in a 4-8 m thick quartzitic layer that represents the basal part of the sedimentary cover of an ophiolitic sequence, tectonically related to the Piemont Nappe.
Associated Minerals at Type Locality:

Synonyms of StrontiomelaneHide

Other Language Names for StrontiomelaneHide

Simplified Chinese:黑锰锶矿
Traditional Chinese:黑錳鍶礦

Relationship of Strontiomelane to other SpeciesHide

Other Members of this group:
CoronaditePb(Mn4+6Mn3+2)O16Mon. 2/m
CryptomelaneK(Mn4+7Mn3+)O16Mon. 2/m
FerricoronaditePb(Mn4+6Fe3+2)O16Tet. 4/m : I4/m
FerrihollanditeBa(Mn4+6Fe3+2)O16Mon. 2/m
HollanditeBa(Mn4+6Mn3+2)O16Mon. 2/m
ManjiroiteNa(Mn4+7Mn3+)O16Tet. 4/m : I4/m
ThalliomelaneTl(Mn4+7.5Cu2+0.5)O16Tet. 4/m : I4/m

Related Minerals - Nickel-Strunz GroupingHide

4.DK.FerrihollanditeBa(Mn4+6Fe3+2)O16Mon. 2/m
4.DK.4.DK.FerricoronaditePb(Mn4+6Fe3+2)O16Tet. 4/m : I4/m
4.DK.05Akaganeite(Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2OMon. 2/m
4.DK.05aCoronaditePb(Mn4+6Mn3+2)O16Mon. 2/m
4.DK.05aCryptomelaneK(Mn4+7Mn3+)O16Mon. 2/m
4.DK.05aHollanditeBa(Mn4+6Mn3+2)O16Mon. 2/m
4.DK.05aManjiroiteNa(Mn4+7Mn3+)O16Tet. 4/m : I4/m
4.DK.05bMannarditeBa(Ti4+6V3+2)O16Tet. 4/m : I41/a
4.DK.05bHenrymeyeriteBa(Ti4+7Fe2+)O16Tet. 4/m : I4/m
4.DK.10Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10Mon. 2/m
4.DK.10Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2OMon. 2/m : P2/m

Fluorescence of StrontiomelaneHide

Not fluorescent in UV

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 StrontiomelaneHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Potter, Russell M., Rossman, George R. (1979) The tetravalent manganese oxides: identification, hydration, and structural relationships by infrared spectroscopy. American Mineralogist, 64, 1199-1218.
Meisser, N., Perseil, E.-A., Brugger, J., Chiappero, P.-J. (1999) Strontiomelane, SrMn4+6Mn3+2O16, a new mineral species of the cryptomelane group from St. Marcel - Praborna, Aosta Valley, Italy. Canadian Mineralogist, 37, 673-678.

Internet Links for StrontiomelaneHide

Localities for StrontiomelaneHide

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
    • Luxembourg
      • Vielsalm
        • Salmchâteau
Meisser, N., Perseil, E.-A., Brugger, J., Chiappero, P.-J. (1999) Strontiomelane, SrMn4+6Mn3+2O16, a new mineral species of the cryptomelane group from St. Marcel-Praborna, Aoste Valley, Italy, Canadian Mineralogist, 37, 673.; Schreyer, W., Fransolet, A.-M., Bernhardt, H.-J. (2001) Hollandite-strontiomelane solid solutions coexisting with kanonaite and braunite in late quartz veins of the Stavelot Massif, Ardennes, Belgium. Contributions to Mineralogy and Petrology, 141, 560-571.; 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).
Italy (TL)
  • Aosta Valley
    • Saint-Marcel
N. Meisser et al.: Canadian Mineralogist 37:673-678 (1999)
  • Nagasaki Prefecture
    • Nagasaki City
      • Kinkai-Tone-machi
Fukushima et al (2004) Koubutsu-Gakkai Kou'en-Youshi, 207.
Mineral and/or Locality  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © and the Hudson Institute of Mineralogy 1993-2020, except where stated. Most political location boundaries are © OpenStreetMap contributors. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 29, 2020 04:43:09 Page generated: August 29, 2020 23:40:41
Go to top of page