Ellenbergerite-(PO4)
A material that is NOT an approved mineral species
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Formula:
(Mg,◻)2(Mg,Al)12(SiO3OH)6(PO3OH)(OH)6
Colour:
cream-red, greenish-blue
Crystal System:
Hexagonal
Said to be different from phosphate-poor ellenbergerite and phosphoellenbergerite. It is supposed to have a separate site occupied by phosphorus. It is also optically distinct from the above species. Its structure is said to be solved.
Found as (1) cream-red grains with magnesiostaurolite, pyrope, quartz, rutile, and talc, and (2) greenish-blue crystals in association with "magnesioaluminoceladonite", magnesiostaurolite, pyrope, and talc.
Not given in the Valid Unnamed Minerals list of IMA; not approved by IMA.
Found as (1) cream-red grains with magnesiostaurolite, pyrope, quartz, rutile, and talc, and (2) greenish-blue crystals in association with "magnesioaluminoceladonite", magnesiostaurolite, pyrope, and talc.
Not given in the Valid Unnamed Minerals list of IMA; not approved by IMA.
Unique Identifiers
Mindat ID:
47753
Long-form identifier:
mindat:1:1:47753:6
GUID
(UUID V4):
(UUID V4):
d0f51f3a-dfd6-4233-9b96-aa8368393b78
IMA Classification of Ellenbergerite-(PO4)
IMA status notes:
Published without approval
Physical Properties of Ellenbergerite-(PO4)
Colour:
cream-red, greenish-blue
Optical Data of Ellenbergerite-(PO4)
Type:
Uniaxial (+)
RI values:
nω = 1.640(2) nε = 1.644(2)
Max Birefringence:
δ = 0.004
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Comments:
data for the cream-red grains
Chemistry of Ellenbergerite-(PO4)
Mindat Formula:
(Mg,◻)2(Mg,Al)12(SiO3OH)6(PO3OH)(OH)6
Crystallography of Ellenbergerite-(PO4)
Crystal System:
Hexagonal
Class (H-M):
6mm - Dihexagonal Pyramidal
Space Group:
P63mc
Setting:
P63mc
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
6.24 Å | (60) |
4.52 Å | (60) |
3.63 Å | (90) |
3.157 Å | (100) |
2.699 Å | (70) |
2.369 Å | (60) |
2.306 Å | (60) |
2.212 Å | (80) |
1.801 Å | (60) |
1.552 Å | (70) |
Comments:
data for the cream-red grains
Other Information
IR Spectrum:
data for the greenish-blue crystals in brackets, [cm-1]: 3575w (3570w), 3470 (3420), 3300sh, 1415w (1420), 1195 (1190sh), 1135, 1050 (1040s), 950sh, 925s (917), 800, (768), 700w, 630sh, 586 (590), 505sh (510sh), (467s), 472s, 400
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 Ellenbergerite-(PO4)
mindat.org URL:
https://www.mindat.org/min-47753.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Ellenbergerite-(PO4)
Reference List:
Localities for Ellenbergerite-(PO4)
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).
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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
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