Santabarbaraite
A valid IMA mineral species
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About Santabarbaraite
Formula:
Fe3+3(PO4)2(OH)3 · 5H2O
Colour:
Orange, orange brown, yellowish-brown
Lustre:
Sub-Vitreous, Resinous, Waxy, Greasy
Specific Gravity:
2.42
Crystal System:
Amorphous
Name:
Named in 2000 by Giovanni Pratesi, Curzio Cipriani, Gabriele Giuli, and William D. Birch for the type locality in the Santa Barbara mining district, Valdarno, Tuscany, Italy. It also honors St. Barbara (4th century, Nicomedia (now Jzmid, Turkey)), the patron saint of miners.
Consists of x-ray amorphous replacements of vivianite as well as smooth botryoidal crusts.
Unique Identifiers
Mindat ID:
11436
Long-form identifier:
mindat:1:1:11436:3
GUID
(UUID V4):
(UUID V4):
d3563552-4261-456b-8e1e-93ef2384d8f9
IMA Classification of Santabarbaraite
Approved
Approval year:
2000
First published:
2003
Classification of Santabarbaraite
8.CE.80
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Sbb | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Sbb | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Santabarbaraite
Sub-Vitreous, Resinous, Waxy, Greasy
Transparency:
Transparent, Translucent
Colour:
Orange, orange brown, yellowish-brown
Streak:
yellow to yellowish-brown
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
parting according to the vivianite cleavage
Fracture:
Conchoidal
Density:
2.42 g/cm3 (Measured)
Optical Data of Santabarbaraite
Type:
Isotropic
RI values:
n = 1.695
Birefringence:
0.000
Surface Relief:
High
Chemistry of Santabarbaraite
Mindat Formula:
Fe3+3(PO4)2(OH)3 · 5H2O
Elements listed:
Crystallography of Santabarbaraite
Crystal System:
Amorphous
Morphology:
Pseudomorphs of vivianite or botryoidal crusts.
Comment:
X-ray amorphous; Partial replacements said to contain poorly crystalline vivianite, but the analogy to the phosphate analog of parasymplesite are unsupported by data.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| - Å | () |
Comments:
Amorphous to X-rays.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] |
Type Occurrence of Santabarbaraite
General Appearance of Type Material:
Resinous botryoidal masses and waxy to resinous replacements of vivianite.
Place of Conservation of Type Material:
Museum Victoria, Australia, catalogue numbers M22892
and M34637.
and M34637.
Geological Setting of Type Material:
In clays, pseudomorphous after vivianite
Associated Minerals at Type Locality:
Reference:
Pratesi, G., Cipriani, C., Giuli, G., Birch, W. (2003) Santabarbaraite: a new amorphous phosphate mineral. European Journal of Mineralogy: 15: 185-192.
Synonyms of Santabarbaraite
Other Language Names for Santabarbaraite
Common Associates
Associated Minerals Based on Photo Data:
| 10 photos of Santabarbaraite associated with Metavivianite | Fe2+Fe3+2(PO4)2(OH)2 · 6H2O |
| 9 photos of Santabarbaraite associated with Vivianite | Fe2+Fe2+2(PO4)2 · 8H2O |
| 5 photos of Santabarbaraite associated with Siderite | FeCO3 |
| 2 photos of Santabarbaraite associated with Goethite | α-Fe3+O(OH) |
| 1 photo of Santabarbaraite associated with Zincolibethenite | CuZn(PO4)(OH) |
| 1 photo of Santabarbaraite associated with Quartz | SiO2 |
| 1 photo of Santabarbaraite associated with Limonite | |
| 1 photo of Santabarbaraite associated with Triplite | Mn2+2(PO4)F |
Related Minerals - Strunz-mindat Grouping
| 8.CE.X | Babánekite | Cu3(AsO4)2 · 8H2O |
| 8.CE. | Monteneroite | Cu2+Mn2+2(AsO4)2 · 8H2O |
| 8.CE.05 | Chudobaite | (Mg,Zn)5(AsO4)2(HAsO4)2 · 10H2O |
| 8.CE.05 | Geigerite | Mn2+5(AsO4)2(HAsO4)2 · 10H2O |
| 8.CE.10 | Newberyite | Mg(PO3OH) · 3H2O |
| 8.CE.15 | Brassite | Mg(HAsO4) · 4H2O |
| 8.CE.20 | Phosphorrösslerite | Mg(PO3OH) · 7H2O |
| 8.CE.20 | Rösslerite | Mg(HAsO4) · 7H2O |
| 8.CE.25 | Metaswitzerite | Mn2+3(PO4)2 · 4H2O |
| 8.CE.25 | Switzerite | Mn2+3(PO4)2 · 7H2O |
| 8.CE.30 | Lindackerite | CuCu4(AsO4)2(HAsO4)2 · 9H2O |
| 8.CE.30 | Ondrušite | CaCu4(AsO4)2(HAsO4)2 · 10H2O |
| 8.CE.30 | Veselovskýite | ZnCu4(AsO4)2(HAsO4)2 · 9H2O |
| 8.CE.30 | Pradetite | CoCu4(AsO4)2(HAsO4)2 · 9H2O |
| 8.CE.30 | Klajite | MnCu4(AsO4)2(HAsO4)2 · 9-10H2O |
| 8.CE.30 | Hloušekite | (Ni,Co)Cu4(AsO4)2(AsO3OH)2 · 9H2O |
| 8.CE.35 | Bobierrite | Mg3(PO4)2 · 8H2O |
| 8.CE.40 | Annabergite | Ni3(AsO4)2 · 8H2O |
| 8.CE.40 | Arupite | Ni3(PO4)2 · 8H2O |
| 8.CE.40 | Barićite | (Mg,Fe)3(PO4)2 · 8H2O |
| 8.CE.40 | Erythrite | Co3(AsO4)2 · 8H2O |
| 8.CE.40 | Ferrisymplesite | Fe3+3(AsO4)2(OH)3 · 5H2O |
| 8.CE.40 | Hörnesite | Mg3(AsO4)2 · 8H2O |
| 8.CE.40 | Köttigite | Zn3(AsO4)2 · 8H2O |
| 8.CE.40 | Manganohörnesite | Mn2+3(AsO4)2 · 8H2O |
| 8.CE.40 | Parasymplesite | Fe2+3(AsO4)2 · 8H2O |
| 8.CE.40 | Vivianite | Fe2+Fe2+2(PO4)2 · 8H2O |
| 8.CE.40 | Pakhomovskyite | Co3(PO4)2 · 8H2O |
| 8.CE.45 | Symplesite | Fe2+3(AsO4)2 · 8H2O |
| 8.CE.50 | Cattiite | Mg3(PO4)2 · 22H2O |
| 8.CE.55 | Koninckite | Fe3+PO4 · 3H2O |
| 8.CE.60 | Kaňkite | FeAsO4 · 3.5H2O |
| 8.CE.60 | Hilarionite | Fe3+2(SO4)(AsO4)(OH) · 6H2O |
| 8.CE.65 | Steigerite | Al(VO4) · 3H2O |
| 8.CE.70 | Metaschoderite | Al2(PO4)(VO4) · 6H2O |
| 8.CE.70 | Schoderite | Al2(PO4)(VO4) · 8H2O |
| 8.CE.75 | Malhmoodite | FeZr(PO4)2 · 4H2O |
| 8.CE.75 | Zigrasite | MgZr(PO4)2 · 4H2O |
| 8.CE.75 | UM2009-11-PO:CaHZr | CaZr[PO4]2 · 4H2O |
| 8.CE.85 | Metaköttigite | (Zn,Fe,Fe)3(AsO4)2 · 8(H2O,OH) |
| 8.CE.90 | Slavkovite | Cu13(AsO4)6(AsO3OH)4 · 23H2O |
Fluorescence of Santabarbaraite
Not fluorescent in UV
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.
Internet Links for Santabarbaraite
mindat.org URL:
https://www.mindat.org/min-11436.html
Please feel free to link to this page.
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References for Santabarbaraite
Localities for Santabarbaraite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Australia | |
| G. Pratesi et al. (2003) |
Cameroon | |
| Fransolet et al. (1984) |
France | |
| Jean Claude Dol collection |
Germany | |
| M.E. Ciriotti - 05.06.2008 - Probed +1 other reference |
| Blaß et al. (2010) |
Italy (TL) | |
| Pratesi et al. (2003) +1 other reference |
| Pratesi et al. (2003) +1 other reference | |
Japan | |
| Ohe Rikosha specimens. |
Portugal | |
| Alves et al. (2017) |
| Pedro Alves collection and analytical ... |
Russia | |
| Ponomarev et al. (2017) |
| Ponomarev et al. (2017) |
| Fagel et al. (2005) +1 other reference | |
| Ponomarev et al. (2017) |
| Ponomarev et al. (2017) |
| Ponomarev et al. (2017) |
| Shen et al. (2021) |
| Ponomarev et al. (2017) |
Spain | |
| Calvo (2015) |
| Joan Abella i Creus (Joanabellacreus@gmail.com) |
Ukraine | |
| Geologiya SSSR (The geology of USSR) |
| P Haas collection +1 other reference |
| Arbuzov V.A. et al. (1967) | |
| Kerch Iron-Ore Basin by Nikita V. ... |
| Popov S.P. (1938) +1 other reference | |
USA | |
| Smithsonian Institution Mineral ... |
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Kerchenskoe deposit, Kerchenskyi (Fe)-ore basin, Kerch Peninsula, Crimea, Ukraine