IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
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 Educators
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
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Beckettite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
Ca2V6Al6O20
Crystal System:
Triclinic
Name:
Named in honor of John R. Beckett, a cosmochemist at
California Institute of Technology.
The V3+ analogue of addibischoffite and warkite.

Chemically similar to sherwoodite (both Ca-Al-V minerals, but different V valency); somewhat similar to burnettite, mukhinite, kannanite.


Hide all sections | Show all sections

Classification of BeckettiteHide

Approved
Approval Year:
2015

Chemical Properties of BeckettiteHide

Formula:
Ca2V6Al6O20

Crystallography of BeckettiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 10.367 Å, b = 10.756 Å, c = 8.895 Å
α = 106°, β = 96°, γ = 124.7°
Ratio:
a:b:c = 0.964 : 1 : 0.827
Unit Cell V:
739.73 ų (Calculated from Unit Cell)
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.684(60)
2.683(68)
2.544(100)
2.541(81)
2.540(75)
2.104(84)
2.103(84)
2.089 (89)

Type Occurrence of BeckettiteHide

General Appearance of Type Material:
aggregates of crystals 4 to 8 μm
Place of Conservation of Type Material:
In the collections of the National Museum of Natural History,Smithsonian Institution, Washington, DC, USA, registration number USNM 7617
Geological Setting of Type Material:
CV3 meteorite in a V-rich, fluffy Type A Ca-Al-rich inclusion (CAI) A-WP1 in USNM 7617
Associated Minerals at Type Locality:

Synonyms of BeckettiteHide

Relationship of Beckettite to other SpeciesHide

Other Members of this group:
Aenigmatite GroupA subgroup of the Sapphirine Supergroup.
KhesiniteCa4(Mg3Fe3+9)O4(Fe3+9Si3)O36Tric. 1 : P1
Rhönite GroupSubgroup of the Sapphirine Supergroup.
Sapphirine GroupSubgroup of the Sapphirine Supergroup.
Surinamite(Mg,Fe)3Al4BeSi3O16Mon.
UM1988-26-SiO:AlMgMg4Al2O[Si3Al2O15]

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 BeckettiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ma, C., Paque, J. and Tschauner, O. (2015) Beckettite, IMA 2015-001. CNMNC Newsletter No. 25, June 2015, page 531; Mineralogical Magazine, 79, 529-535
Ma, C., Paque, J., & Tschauner, O. (2016). Discovery of Beckettite, Ca2V6Al6O20, a New Alteration Mineral in a V-Rich Ca-Al-Rich Inclusion from Allende. In Lunar and Planetary Science Conference (Vol. 47, p. 1704pdf).

Internet Links for BeckettiteHide

Localities for BeckettiteHide

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.
Mexico (TL)
 
  • Chihuahua
    • Pueblito de Allende
Ma, C., Paque, J. and Tschauner, O. (2015) Beckettite, IMA 2015-001. CNMNC Newsletter No. 25, June 2015, page 531; Mineralogical Magazine, 79, 529-535; Ma, C., Paque, J., & Tschauner, O. (2016, March). Discovery of Beckettite, Ca2V6Al6O20, a New Alteration Mineral in a V-Rich Ca-Al-Rich Inclusion from Allende. In Lunar and Planetary Science Conference (Vol. 47, p. 1704).
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 1993-2018, 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: October 24, 2018 06:01:37 Page generated: September 29, 2018 05:45:36
Go to top of page