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

Perettiite-(Y)

This page is currently not sponsored. Click here to sponsor this page.
Formula:
Y2Mn4FeSi2B8O24
Colour:
Yellow
Hardness:
7
Specific Gravity:
4.533 (Calculated)
Crystal System:
Orthorhombic
Name:
Named for Dr. Adolf Peretti, the mineral's discoverer, who is (as of 2015) head gemologist and director of GRS Gemresearch Swisslab AG (Adligenswil, Switzerland).
New structure type. The element combination is unique; other Y- & Fe-bearing borosilicate minerals are represented by laptevite-(Ce) and proshchenkoite-(Y), but their composition is more complex.

The structure contains: (1) two eight-coordinated sites: Y(Ln) and Mn2+(Ca,Y); (2) VI(Fe2+,Mg,Li) site; (3) Si2B8O24 (010) sheets formed by 4-, 5- and 8-membered rings ; in the interlayer space (between two of these sheets) the above sites occur. Boron is replaced by beryllium to a small extent.


Hide all sections | Show all sections

Classification of Perettiite-(Y)Hide

Approved
Approval Year:
2015

Pronounciation of Perettiite-(Y)Hide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of Perettiite-(Y)Hide

Colour:
Yellow
Hardness:
Comment:
Estimated
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
4.533 g/cm3 (Calculated)

Chemical Properties of Perettiite-(Y)Hide

Formula:
Y2Mn4FeSi2B8O24

Crystallography of Perettiite-(Y)Hide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pmna
Setting:
Pmna
Cell Parameters:
a = 12.8252(5) Å, b = 4.6187(2) Å, c = 12.8252(5) Å
Ratio:
a:b:c = 2.777 : 1 : 2.777
Unit Cell V:
759.71 ų
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.63(52)
4.08(28)
3.05(100)
2.64(67)
2.54(60)
1.87(33)
1.84(52)
1.44(25)
Comments:
From Type Description.

Type Occurrence of Perettiite-(Y)Hide

General Appearance of Type Material:
Yellow needles enclosed in phenakite crystals.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Museum of Natural History Bern, Bernastrasse 5, 3012 Bern, Switzerland, specimen number NMBE-43035
Geological Setting of Type Material:
Pegmatites
Associated Minerals at Type Locality:

Synonyms of Perettiite-(Y)Hide

Other Language Names for Perettiite-(Y)Hide

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 Perettiite-(Y)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Danisi, R.M., Armbruster, T., Wang, H., Günther, D., Nagashima, M., Reusser, E. and Bieri, W. (2015) Perettiite-(Y), IMA 2014-109. CNMNC Newsletter No. 25, June 2015, page 533; Mineralogical Magazine, 79, 529-535.
Danisi, R.M., Armbruster, T., Libowitzky, E., Wang, Hao A.O., Günther, D. Nagashima, M. Reusser, E. and Bieri W. (2015): Perettiite-(Y), Y3+2Mn2+4Fe2+[Si2B8O24], a new mineral from Momeik, Myanmar. European Journal of Mineralogy, 27, 793-803.

Internet Links for Perettiite-(Y)Hide

Localities for Perettiite-(Y)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.
Myanmar (TL)
 
  • Shan State
    • Kyaukme District
      • Momeik Township
        • Molo quarter
          • Khetchel village (Cache village; Khat Che village)
Danisi, R.M., Armbruster, T., Wang, H., Günther, D., Nagashima, M., Reusser, E. and Bieri, W. (2015) Perettiite-(Y), IMA 2014-109. CNMNC Newsletter No. 25, June 2015, page 533; Mineralogical Magazine, 79, 529-535. ; Danisi, R.M., Armbruster, T., Wang, H., Günther, D., Nagashima, M., Reusser, E. and Bieri, W. (2015) Perettiite-(Y), IMA 2014-109. CNMNC Newsletter No. 25, June 2015, page 533; Mineralogical Magazine, 79, 529-535. ; Danisi, R.M., Armbruster, T., Libowitzky, E., Wang, Hao A.O., Günther, D. Nagashima, M. Reusser, E. and Bieri W. (2015): Perettiite-(Y), Y3+2Mn2+4Fe2+[Si2B8O24], a new mineral from Momeik, Myanmar. European Journal of Mineralogy. 27: 793-803
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 22, 2017 03:53:07 Page generated: September 19, 2017 16:29:11
Go to top of page