Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralSearch 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
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Ichnusaite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
Th(MoO4)2·3H2O
Colour:
Colorless
Lustre:
Adamantine, Pearly
Specific Gravity:
4.262 (Calculated)
Crystal System:
Monoclinic
Name:
The name is from the old Greek name of Sardinia, Ιχνουσσα, ichnusa.
New structure type. (pronounced iknusa-ait)


Hide all sections | Show all sections

Classification of IchnusaiteHide

Approved
Approval Year:
2013

Physical Properties of IchnusaiteHide

Adamantine, Pearly
Transparency:
Transparent
Colour:
Colorless
Streak:
white
Tenacity:
Brittle
Cleavage:
Perfect
{100}
Density:
4.262 g/cm3 (Calculated)
Comment:
Could not be measured on type material

Chemical Properties of IchnusaiteHide

Formula:
Th(MoO4)2·3H2O
IMA Formula:
Th(MoO4)2 · 3H2O

Crystallography of IchnusaiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 9.6797(12) Å, b = 10.3771(13) Å, c = 9.3782(12) Å
β = 90.00(1)°
Ratio:
a:b:c = 0.933 : 1 : 0.904
Unit Cell V:
942 ų
Z:
4
Morphology:
Thin {100} tabular crystals

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.7(mw)
5.66(m)
5.19(mw)
4.69(mw)
3.930(m)
3.479(s)
3.257(s)
3.074(m)
Comments:
From Type Description.

Type Occurrence of IchnusaiteHide

General Appearance of Type Material:
Thin {100} tabular crystals, up to 200 μm in length
Place of Conservation of Type Material:
Type material is deposited in the collections of the Museo di Storia Naturale, Universita` di Pisa, Calci (Pisa), Italy, catalogue number 19679
Geological Setting of Type Material:
Alteration of molybdenite ores under basic pH conditions.
Associated Minerals at Type Locality:

Synonyms of IchnusaiteHide

Other Language Names for IchnusaiteHide

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 IchnusaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Orlandi, P., Biagioni, C., Bindi, L. and Nestola, F. (2013) Ichnusaite, IMA 2013- 087. CNMNC Newsletter No. 18, December 2013, page 3255; Mineralogical Magazine, 77, 3249-3258.
Orlandi, P., Biagioni, C., Bindi, L. & Nestola, F. (2014): Ichnusaite, Th(MoO4)2.3H2O, the first natural thorium molybdate: occurrence, description, and crystal structure. American Mineralogist, 99, 2089-2094

Internet Links for IchnusaiteHide

Localities for IchnusaiteHide

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)
 
  • Sardinia
    • Cagliari Province
      • Sarroch
Orlandi, P., Biagioni, C., Bindi, L. and Nestola, F. (2013) Ichnusaite, IMA 2013- 087. CNMNC Newsletter No. 18, December 2013, page 3255; Mineralogical Magazine, 77, 3249-3258. ; Orlandi P., Gelosa M., Bonacina E., Caboni F., Mamberti M., Tanca G.A., Vinci A. (2015): Sette nuove specie mineralogiche della Sardegna. I minerali della mineralizzazione a molibdeno e bismuto di Su Seinargiu (CA). Riv. Mineral. Ital., 39, 2, 84-115.
Mineral and/or Locality  
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 1993-2017, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: September 21, 2017 09:40:50 Page generated: September 13, 2017 04:52:18
Go to top of page