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 Articles
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 CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Parascandolaite

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

About ParascandolaiteHide

Formula:
KMgF3
Colour:
Colourless, white
Lustre:
Vitreous
Specific Gravity:
3.11
Crystal System:
Isometric
Name:
Named in honor of Antonio Parascandola (27 July 1902, Procida, Naples, Campania, Italy - 30 March 1977, Portici, Naples, Campania, Italy), professor of mineralogy, geology and later volcanology and physical geography at the Pozzuoli aeronautical academy, at the Istituto di Mineralogia della Facoltà di Scienze of Napoli and at the Istituto di Mineralogia e geologia della Facoltà di agraria of Portici (Napoli). He made detailed observations about the conditions of formation of the minerals in the fumaroles. The mineral was found in scoria formed during the 1944 eruption that Parascandola studied.

The mineral, isotypic to cubic perovskites, is the natural analog of the synthetic fluoride KMgF3 and is related to neighborite, NaMgF3. Parascandolaite probably corresponds to unnamed mineral UM1960-02-F:KMg (Smith and Nickel, 2007).


Classification of ParascandolaiteHide

Approved
Approval Year:
2013
First Published:
2014

Physical Properties of ParascandolaiteHide

Vitreous
Transparency:
Transparent
Colour:
Colourless, white
Cleavage:
Perfect
on {100}
Density:
3.11(1) g/cm3 (Measured)    3.123 g/cm3 (Calculated)

Optical Data of ParascandolaiteHide

Type:
Isotropic
RI values:
n = 1.395(5)
Birefringence:
Isotropic minerals have no birefringence
Surface Relief:
Moderate

Chemical Properties of ParascandolaiteHide

Formula:
KMgF3

Crystallography of ParascandolaiteHide

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Pm3m
Setting:
Pm3m
Cell Parameters:
a = 4.0032(9) Å
Unit Cell V:
64.14 ų
Z:
1
Morphology:
Cubic crystals.
Twinning:
No twinning was observed.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.831 (83)
2.311 (78)
2.001 (100)
1.633 (35)
1.415 (56)
1.267 (16)
1.206 (22)
Comments:
Sample from the type locality.

Type Occurrence of ParascandolaiteHide

General Appearance of Type Material:
cubic crystals up to 0.5 mm in length
Place of Conservation of Type Material:
Deposited in the Reference Collection of the Dipartimento di Chimica, Università degli Studi di Milano, Italy, specimen number 2013–2014.
Geological Setting of Type Material:
volcanic sublimate at Vesuvius volcano on 1944 eruption lava scoria. Parascandolaite formed by reaction of the fumarolic gases containing hydrofluoric acid with the K-rich host rock.
Associated Minerals at Type Locality:
Reference:
Demartin, F., Campostrini, I., Castellano, C. and Russo, M. (2014) Parascandolaite, KMgF3, a new perovskite-type fluoride from Vesuvius. Physics and Chemistry of Minerals: 41: 403-407.

Synonyms of ParascandolaiteHide

Relationship of Parascandolaite to other SpeciesHide

Other Members of this group:
NeighboriteNaMgF3Orth. mmm (2/m 2/m 2/m)

Fluorescence of ParascandolaiteHide

No fluorescence was observed under either short- or long-wave ultraviolet radiation.

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 ParascandolaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Williams, P.A., Hatert, F., Pasero, M., Mills, S.J. (2013) IMA Commission on new minerals, nomenclature and classification (CNMNC) Newsletter 18. New minerals and nomenclature modifications approved in 2013. Mineralogical Magazine: 77: 3249-3258.
Demartin, F., Campostrini, I., Castellano, C. and Russo, M. (2014) Parascandolaite, KMgF3, a new perovskite-type fluoride from Vesuvius. Physics and Chemistry of Minerals: 41: 403-407.
Kaminsky, F.V., Wirth, R. and Schreiber, A. (2015) A microinclusion of lower-mantle rock and other minerals and nitrogen lower mantle inclusions in a diamond. Canadian Mineralogist: 53: 83-104.
Mitchell, R.H., Welch, M.D., Chakhmouradian, A.R. (2017) Nomenclature of the perovskite supergroup: A hierarchical system of classification based on crystal structure and composition. Mineralogical Magazine: 81: 411-461.
Cámara, F., Belakovskiy, D.I., Uvarova, Y., Gagne, O.C. (2017) New mineral names. American Mineralogist: 102: 2525-2531.

Internet Links for ParascandolaiteHide

Localities for ParascandolaiteHide

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.
Brazil
 
  • Mato Grosso
    • Juína kimberlite field
      • Juína
        • Sorriso river
Kaminsky, F. V., Wirth, R., Schreiber, A. (2015) A microinclusion of lower-mantle rock and other minerals and nitrogen lower-mantle inclusions in a diamond. The Canadian Mineralogist: 53(1): 83-104.; Kaminsky, F. V., Ryabchikov, I. D., & Wirth, R. (2015) A primary natrocarbonatitic association in the Deep Earth. Mineralogy and Petrology: 1-12.
Italy (TL)
 
  • Campania
    • Naples
      • Somma-Vesuvius Complex
Demartin, F., Campostrini, I., Castellano, C. and Russo, M. (2014): Parascandolaite, KMgF3, a new perovskite-type fluoride from Vesuvius. Physics and Chemistry of Minerals, 41, 403-407.; Demartin F., Campostrini I., Castellano C., Russo M. 2014. Parascandolaite, KMgF3, a new perovskite-type fluoride from Vesuvius. Phys. Chem. Min., published online: 8 April 2014.
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. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: March 23, 2019 05:01:17 Page generated: February 28, 2019 15:09:39
Go to top of page