SUPPORT US. If mindat.org is important to you, click here to donate to our Fall 2019 fundraiser!
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:
Keyword(s):
 
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

Mottanaite-(Ce)

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

About Mottanaite-(Ce)Hide

06644980014953945574834.jpg
Annibale Mottana
Formula:
Ca4(Ce,REE)Σ2Al(Be1.50.5)Σ2[B4Si4O22]O2
Formerly Ca4(CeCa)AlBe2(Si4B4O22)O2; changed due to approval of the IMA 18-D proposal
Colour:
Brown
Lustre:
Vitreous
Crystal System:
Monoclinic
Name:
Named in 2002 by Giancarlo Della Ventura, Paola Bonazzi, Roberta Oberti, and Luisa Ottolini in honor of Annibale Mottana (b. 1940), Professor of Mineralogy, University of Roma Tre, "in recognition of his leaderhip and support of investigations and cataloguing of the Latium minerals, during which the mottanaite-(Ce) sample was found". The suffix denotes the cerium content.
This page provides mineralogical data about Mottanaite-(Ce).


Classification of Mottanaite-(Ce)Hide

Approved
Approval Year:
2001
Approval History:
2018: Formula changed (IMA 18-D)
9.DK.20

9 : SILICATES (Germanates)
D : Inosilicates
K : Inosilicates with 5-periodic single chains

Physical Properties of Mottanaite-(Ce)Hide

Vitreous
Colour:
Brown

Optical Data of Mottanaite-(Ce)Hide

Type:
Biaxial (-)
RI values:
nα = 1.680 nβ = 1.694 nγ = 1.708
Max Birefringence:
δ = 0.028
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v strong

Chemical Properties of Mottanaite-(Ce)Hide

Formula:
Ca4(Ce,REE)Σ2Al(Be1.50.5)Σ2[B4Si4O22]O2

Formerly Ca4(CeCa)AlBe2(Si4B4O22)O2; changed due to approval of the IMA 18-D proposal
IMA Formula:
Ca4Ce2Al(Be1.50.5)Σ2[B4Si4O22]O2

Crystallography of Mottanaite-(Ce)Hide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 19.032(9) Å, b = 4.746(4) Å, c = 10.248(5) Å
β = 110.97(5)°
Ratio:
a:b:c = 4.01 : 1 : 2.159
Unit Cell V:
864.3 ų
Z:
2
Comment:
Space group P2/a.

Type Occurrence of Mottanaite-(Ce)Hide

Synonyms of Mottanaite-(Ce)Hide

Other Language Names for Mottanaite-(Ce)Hide

Relationship of Mottanaite-(Ce) to other SpeciesHide

Other Members of this group:
CiprianiiteCa4[(Th,U),Ca]Σ2Al(Be0.51.5)Σ2[B4Si4O22](OH)2Mon.
Ferri-mottanaite-(Ce) Ca4Ce2Fe3+(Be1.50.5)[Si4B4O22]O2Mon. 2/m : P2/b
Hellandite-(Ce)(Ca,REE)4Ce2Al□2(B4Si4O22) (OH)2Mon. 2/m
Hellandite-(Y)(Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2Mon.
Tadzhikite-(Ce)Ca4Ce3+2Ti◻(B4Si4O22)(OH)2Mon.

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Mottanaite-(Ce) associated with Feldspar Group

Related Minerals - Nickel-Strunz GroupingHide

9.DK.05BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)Tric. 1 : P1
9.DK.05LithiomarsturiteLiCa2Mn2Si5O14(OH)Tric.
9.DK.05ManganbabingtoniteCa2(Mn,Fe)FeSi5O14(OH)Tric.
9.DK.05MarsturiteNaCaMn3Si5O14(OH)Tric. 1 : P1
9.DK.05NambuliteLiMn2+4Si5O14(OH)Tric.
9.DK.05Natronambulite(Na,Li)(Mn,Ca)4Si5O14OHTric.
9.DK.05RhodoniteMn2+SiO3Tric. 1
9.DK.05ScandiobabingtoniteCa2(Fe2+,Mn)ScSi5O14(OH)Tric.
9.DK.05Fowlerite(Mn2+,Zn,Ca)SiO3
9.DK.10SantaclaraiteCaMn4[Si5O14OH](OH) · H2OTric.
9.DK.15SaneroiteNaMn2+5[Si5O14(OH)](VO3)(OH)Tric.
9.DK.20Hellandite-(Y)(Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2Mon.
9.DK.20Tadzhikite-(Ce)Ca4Ce3+2Ti◻(B4Si4O22)(OH)2Mon.
9.DK.20CiprianiiteCa4[(Th,U),Ca]Σ2Al(Be0.51.5)Σ2[B4Si4O22](OH)2Mon.
9.DK.20Hellandite-(Ce)(Ca,REE)4Ce2Al□2(B4Si4O22) (OH)2Mon. 2/m

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 Mottanaite-(Ce)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Della Ventura, G., Bonazzi, P., Oberti, R., Ottolini, L. (2002) Ciprianiite and mottanaite-(Ce), two new minerals of the hellandite group from Latium (Italy). American Mineralogist: 87: 739-744.
Oberti, R., Ventura, G.D., Ottolini, L., Hawthorne, F.C., Bonazzi, P. (2002) Re-definition, nomenclature, and crystal-chemistry of the hellandite group. American Mineralogist: 87: 745-752.

Internet Links for Mottanaite-(Ce)Hide

Localities for Mottanaite-(Ce)Hide

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.
Italy (TL)
 
  • Lazio
    • Metropolitan City of Rome Capital
      • Campagnano
        • Sacrofano Caldera
American Mineralogist (2002): 87: 739-744, 745-752.
    • Viterbo Province
      • Vetralla
- M.E. Ciriotti (2006) EPMA+SIMS probed [a mottanaite-(Ce) with Al0.5Fe3+0.5] - Ciriotti, M.E. & Biagioni, C. (2011): Pot-pourri 2011: identificazioni di minerali di interesse. Micro, 3/2011, 125-133
 
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 1993-2019, 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: October 23, 2019 05:54:27 Page generated: September 8, 2019 17:48:06
Go to top of page