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

Veblenite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
KNa(Fe2+5Fe3+4Mn7)Nb4(Si2O7)2(Si8O22)2O6(OH)10(H2O)3
Colour:
red-brown
Lustre:
Vitreous
Specific Gravity:
3.046 (Calculated)
Crystal System:
Triclinic
Name:
In honour of David R. Veblen (b. 1947, Minneapolis, Minnesota, USA), professor at Johns Hopkins University, in recognition of his outstanding contributions to the fields of mineralogy and crystallography. He has established himself as one of the foremost experts in the use of TEM in geology and has made a significant contribution to the polysomatic approach in mineralogy.
This page provides mineralogical data about Veblenite.


Hide all sections | Show all sections

Classification of VebleniteHide

Approved
Approval Year:
2010
First Published:
2013

Physical Properties of VebleniteHide

Vitreous
Transparency:
Translucent
Colour:
red-brown
Streak:
very pale brown
Tenacity:
Brittle
Cleavage:
Perfect
{001}
Fracture:
Splintery
Density:
3.046 g/cm3 (Calculated)

Optical Data of VebleniteHide

Type:
Biaxial (-)
RI values:
nα = 1.676(2) nβ = 1.688(2) nγ = 1.692(2)
2V:
Measured: 65.3° (1), Calculated: 59.6°
Max Birefringence:
δ = 0.016
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Pleochroism:
Visible
Comments:
X = black, Y = black, Z = orange-brown

Chemical Properties of VebleniteHide

Formula:
KNa(Fe2+5Fe3+4Mn7)Nb4(Si2O7)2(Si8O22)2O6(OH)10(H2O)3
IMA Formula:
K22Na(Fe2+5Fe3+4Mn7◻)Nb3Ti(Si2O7)2(Si8O22)2O6(OH)10(H2O)3

Crystallography of VebleniteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.3761(3) Å, b = 27.5062(11) Å, c = 18.6972(9) Å
α = 140.301(3)°, β = 93.033(3)°, γ = 95.664(3)°
Ratio:
a:b:c = 0.195 : 1 : 0.68
Unit Cell V:
1,720.96 ų (Calculated from Unit Cell)
Z:
1

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
18.204 (22)
16.894 (100)
11.661 (8)
4.404 (3)
4.271 (9)
4.056 (3)
3.891 (2)
2.721 (3)

Type Occurrence of VebleniteHide

General Appearance of Type Material:
the laths are hundreds of microns long and no more than tens of microns thick and wide
Place of Conservation of Type Material:
The holotype specimen of veblenite (the same as that of niobophyllite) is under catalogue number #M26148 at the Royal Ontario Museum, 100 Queen’s Park, Toronto, Ontario M5S 2C6.
Geological Setting of Type Material:
The area has been interpreted in terms of a series of interbedded volcanic rocks and gneisses intruded by an alkaline syenite
Associated Minerals at Type Locality:
Reference:
Cámara, F., Sokolova, E., Hawthorne, F.C., Rowe, R., Grice, J.D., Tait, K.T. (2013) Veblenite, K2[]2Na(Fe#2+#5Fe#3+#4Mn#2+#7[])Nb3Ti(Si2O7)2(Si8O22)2O6(OH)10(H2O)3, a new mineral from Seal Lake, Newfoundland and Labrador: mineral description, crystal structure, and a new veblenite Si8O22 ribbon. Mineralogical Magazine: 77(7): 2955-2974.

Synonyms of VebleniteHide

Fluorescence of VebleniteHide

Other InformationHide

IR Spectrum:
The infrared spectrum of the mineral contains the following bands (cm-1): 453, 531, 550, 654 and 958, with shoulders at 1070, 1031 and 908.
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 VebleniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Cámara, F., Sokolova, E., Hawthorne, F.C., Rowe, R., Grice, J., Tait, K. (2010) Veblenite, IMA 2010-050. CNMNC Newsletter No. 7, February 2010, page 29; Mineralogical Magazine: 75: 27-31.
Cámara, F., Sokolova, E., Hawthorne, F.C., Rowe, R., Grice, J.D., Tait, K.T. (2013) Veblenite, K2◻2Na(Fe2+5Fe3+4Mn2+7◻)Nb3Ti(Si2O7)2(Si8O22)2O6(OH)10(H2O)3, a new mineral from Seal Lake, Newfoundland and Labrador: mineral description, crystal structure, and a new veblenite Si8O22 ribbon. Mineralogical Magazine: 77(7): 2955-2974.

Internet Links for VebleniteHide

Localities for VebleniteHide

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.
Canada (TL)
 
  • Newfoundland and Labrador
    • Labrador
      • Seal Lake alkaline complex (Letitia Lake)
Cámara, F., Sokolova, E., Hawthorne, F.C., Rowe, R., Grice, J. and Tait, K. (2010) Veblenite, IMA 2010-050. CNMNC Newsletter No. 7, February 2010, page 29; Mineralogical Magazine, 75, 27-31.; GSC database locality No. 4101; Cámara, F., Sokolova, E., Hawthorne, F. C., Rowe, R., Grice, J. D., & Tait, K. T. (2013). Veblenite, K2〈 2Na (Fe2+ 5Fe3+ 4Mn2+ 7〈) Nb3Ti (Si2O7) 2 (Si8O22) 2O6 (OH) 10 (H2O) 3, a new mineral from Seal Lake, Newfoundland and Labrador: mineral description, crystal structure, and a new veblenite Si8O22 ribbon. Mineralogical Magazine, 77(7), 2955-2974.
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 19, 2018 21:56:07 Page generated: September 22, 2018 02:33:51
Go to top of page