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Santafeite

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Formula:
(Na,Ca,Sr)12(Mn2+,Fe3+,Al,Mg)8Mn84+(VO4)16(OH,O)20 · 8H2O
System:
Orthorhombic
Colour:
Black
Name:
Named by R. S. Sun and R. H. Weber in 1958 after the Atchison, Topeka and Santa Fe Railroad Company for its pioneering exploration and development activities in connection with the uranium deposits of New Mexico.
This page provides mineralogical data about Santafeite.

Classification of Santafeite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
8.DM.40

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
M : With large and medium-sized cations, (OH, etc.):RO4 > 2:1
42.9.7.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
9 : (AB)7(XO4)4Zq·xH2O
21.4.16

21 : Vanadates (and vanadates with arsenate or phosphate)
4 : Vanadates of U, Mn, Fe or Ni
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Type Occurrence of Santafeite

Place of Conservation of Type Material:
National Museum of Natural History, Washington, DC, USA
Year of Discovery:
1957

Physical Properties of Santafeite

Adamantine
Colour:
Black
Streak:
Brown
Tenacity:
Very brittle
Cleavage:
Very Good
{010} perfect, {110} distinct
Density:
3.379 g/cm3 (Measured)    3.39 g/cm3 (Calculated)

Crystallography of Santafeite

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 9.25Å, b = 30.00Å, c = 6.33Å
Ratio:
a:b:c = 0.308 : 1 : 0.211
Unit Cell Volume:
V 1,756.58 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction Data:
d-spacingIntensity
14.88 (100)
7.47 (50)
2.788 (40)
1.667 (40)
3.66 (30)
3.39 (50)
Comments:
Grants district, NM

Optical Data of Santafeite

Type:
Biaxial
RI values:
nα = 2.010
Max Birefringence:
δ = 2.010
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
relatively weak

Chemical Properties of Santafeite

Formula:
(Na,Ca,Sr)12(Mn2+,Fe3+,Al,Mg)8Mn84+(VO4)16(OH,O)20 · 8H2O
Essential elements:
All elements listed in formula:

Relationship of Santafeite to other Species

Common Associates:
8.DM.05MoriniteNaCa2Al2(PO4)2(OH)F4 · 2H2O
8.DM.05EsperanzaiteNaCa2Al2(AsO4)2(OH)F4 · 2H2O
8.DM.10ClinotyroliteCa2Cu9(AsO4,SO4)4(OH,O)10 · 10H2O
8.DM.10TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
8.DM.15Betpakdalite-CaCa[Ca2(H2O)17Ca(H2O)6][Mo86+As25+Fe33+O36(OH)]
8.DM.15Melkovite[Ca2(H2O)15Ca(H2O)6][Mo8P2Fe33+O36(OH)]
8.DM.15Betpakdalite-NaCa[Na2(H2O)17Ca(H2O)6][Mo86+As25+Fe33+O34(OH)3]
8.DM.20Phosphovanadylite-BaBa[V44+P2O8(OH)8]·12H2O
8.DM.20Phosphovanadylite-CaCa[V44+P2O12(OH)4] · 12H2O
8.DM.25YukoniteCa3Fe3+(AsO4)2(OH)3 · 5H2O
8.DM.30UdumineliteCa3Al8(PO4)2O12 · 2H2O
8.DM.35DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed ·
21.4.1UvaniteU26+V65+O21 · 15H2O (?)
21.4.2Vanuranylite(H3O)2(UO2)2(VO4)2 · 4H2O
21.4.3StrelkiniteNa2(UO2)2(VO4)2 · 6H2O
21.4.4CarnotiteK2(UO2)2(VO4)2 · 3H2O
21.4.5Margaritasite(Cs,K,H3O)2(UO2)2(VO4)2 · H2O
21.4.6SengieriteCu2(UO2)2(VO4)2 · 6H2O
21.4.7MetatyuyamuniteCa(UO2)2(VO4)2 · 3-5H2O
21.4.8TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
21.4.9RauviteCa(UO2)2(V10O28) · 16H2O
21.4.10Francevillite(Ba,Pb)(UO2)2(VO4)2 · 5H2O
21.4.11MetavanuraliteAl(UO2)2(VO4)2(OH) · 8H2O
21.4.12VanuraliteAl(UO2)2(VO4)2(OH) · 11H2O
21.4.13CurienitePb(UO2)2(VO4)2 · 5H2O
21.4.14FritzscheiteMn(UO2)2(PO4,VO4)2 · 10H2O (?)
21.4.15Palenzonaite(Ca,Na)3CaMn22+(VO4)3
21.4.17PyrobelonitePbMn2+(VO4)(OH)
21.4.18BrackebuschitePb2Mn3+(VO4)2(OH)
21.4.19ČechitePb(Fe2+,Mn2+)(VO4)(OH)
21.4.20HeyitePb5Fe22+(VO4)2O4
21.4.21MounanaitePbFe23+(VO4)2(OH,F)2
21.4.22SchubneliteFe3+VO4 · H2O
21.4.23FervaniteFe43+V45+O16 · 5H2O
21.4.24KazakhstaniteFe53+V34+V125+O39(OH)9 · 9H2O
21.4.25Bokite(Al,Fe3+)1.3(V5+,V4+,Fe3+)8O20 · 7.4H2O
21.4.26Rusakovite(Fe3+,Al)5(VO4,PO4)2(OH)9 · 3H2O
21.4.27KolovratiteNixZny(VO4)0.67(x+y) · nH2O

Other Names for Santafeite

Name in Other Languages:
German:Santafeit
Spanish:Santafeita

Other Information

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 Santafeite

Reference List:
Sun, M. S. and R.H. Weber (1958): Santafeite, a new hydrated vanadate from New Mexico. American Mineralogist 43, 677-687.

Dunn, P.J. and D.R. Peacor (1986): Santafeite, a re-examination and new empirical formula. Mineralogical Magazine 50, 299-300. [abstract: American Mineralogist (1987): 72: 1028]

Internet Links for Santafeite

Localities for Santafeite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Italy
 
  • Liguria
    • Genova Province
      • Ne
        • Graveglia Valley
Balestra, C., Bracco, R., Armellino, G., Leporatti, C., Callegari, A.M., Boiocchi, M., Costa, E., Ciriotti, M.E. (2012): Aggiornamenti di mineralogia sistematica ligure. Nuove specie della Val Graveglia. Micro 2/2012, 56-65.
USA
 
  • Arizona
    • Navajo Co.
      • Navajo Indian Reservation
        • Monument Valley
          • Mystery Valley
            • Monument No. 1 channel
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 361.
  • New Mexico
    • McKinley Co.
      • Grants District
Minerals of New Mexico 3rd ed.; Sun, M-S. and R.H.Weber: "Santafeite, a new hydrated vanadate from New Mexico", American Mineralogist (1958): 43: 677-687.
Mineral and/or Locality  
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