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Redcanyonite

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About RedcanyoniteHide

Formula:
(NH4)2Mn[(UO2)4O4(SO4)2](H2O)4
Colour:
Red-orange
Hardness:
2
Crystal System:
Monoclinic
Name:
Named for Red Canyon in southeast Utah, USA.
Structurally related to zippeite. Unique combination of minerals; the first mineral to combine N, Mn, and U.



Classification of RedcanyoniteHide

Approved
Approval Year:
2016
First Published:
2018

Pronounciation of RedcanyoniteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of RedcanyoniteHide

Transparency:
Translucent
Colour:
Red-orange
Streak:
Pale orange
Hardness:
Tenacity:
Brittle
Cleavage:
Perfect
on {010}
Fracture:
Irregular/Uneven

Optical Data of RedcanyoniteHide

Type:
Biaxial (+)
RI values:
nα = 1.725(3) nβ = 1.755(3) nγ = 1.850(5)
2V:
Measured: 60° (2), Calculated: 61.3°
Max Birefringence:
δ = 0.125
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r < v, very strong
Pleochroism:
Visible
Comments:
X = orange, Y = yellow and Z = orange; Y << X < Z
Comments:
The optical orientation is X = b, Y ≈ c*, Z ≈ a

Chemical Properties of RedcanyoniteHide

Formula:
(NH4)2Mn[(UO2)4O4(SO4)2](H2O)4

Crystallography of RedcanyoniteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 8.657(2) Å, b = 14.155(3) Å, c = 8.843(2) Å
β = 104.12(2)°
Ratio:
a:b:c = 0.612 : 1 : 0.625
Unit Cell V:
1050.9 ų
Z:
2
Morphology:
Radial aggregates, needles and blades (individually reaching up to 0.2 mm in length,) with aggregates measuring up to 1 mm in diameter. Crystals are flattened on {010} and elongated along [100]. Forms observed: {010}, {001}, {101}, and {10-1}.
Twinning:
Twinning is ubiquitous, by 180° rotation on [100].

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.55Å(21)
7.19Å(100)
3.600Å(33)
3.453Å(56)
3.112Å(72)
2.657Å(23)
2.491Å(21)
2.069Å(20)

Type Occurrence of RedcanyoniteHide

General Appearance of Type Material:
Radial aggregates of red–orange needles and blades individually reaching up to 0.2 mm long, with aggregates measuring up to 1 mm in diameter
Place of Conservation of Type Material:
Mineralogical collections of the Natural History Museum of Los Angeles County, Los Angeles, California, USA (catalogue numbers 66293, 66294, 66295, 66296, 66297 and 66298)
Empirical Formula of Type Material:
(NH4)2.02(Mn0.49Cu0.09Zn0.06)Σ0.64H+0.72[(UO2)4O4(S0.99P0.01O4)2](H2O)4
Associated Minerals at Type Locality:
Reference:
Olds, T.A., Plášil, J., Kampf, A.R., Burns, P.C., Nash, B.P., Marty, J., Rose, T.P., Carlson, S.M. (2018): Redcanyonite, (NH4)2Mn[(UO2)4O4(SO4)2](H2O)4, a new zippeite group mineral from the Blue Lizard Mine, San Juan County, Utah, USA. Mineralogical Magazine, 82 (6): 1261-1275

Synonyms of RedcanyoniteHide

Fluorescence of RedcanyoniteHide

Nonfluorescent.

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 RedcanyoniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Olds, T.A., Plášil, J., Kampf, A.R., Burns, P.C., Nash, B.P., Marty, J., Rose, T.P., Carlson, S.M. (2016) Redcanyonite, IMA 2016-082. CNMNC Newsletter No. 34, December 2016, page 1320; Mineralogical Magazine: 80: 1315–1321
Olds, T.A., Plášil, J., Kampf, A.R., Burns, P.C., Nash, B.P., Marty, J., Rose, T.P., Carlson, S.M. (2018): Redcanyonite, (NH4)2Mn[(UO2)4O4(SO4)2](H2O)4, a new zippeite group mineral from the Blue Lizard Mine, San Juan County, Utah, USA. Mineralogical Magazine, 82 (6): 1261-1275

Internet Links for RedcanyoniteHide

Localities for RedcanyoniteHide

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.
USA (TL)
 
  • Utah
    • San Juan Co.
      • Red Canyon
Olds, T.A., Plášil, J., Kampf, A.R., Burns, P.C., Nash, B.P., Marty, J., Rose, T.P. and Carlson, S.M. (2016) Redcanyonite, IMA 2016-082. CNMNC Newsletter No. 34, December 2016, page 1320; Mineralogical Magazine, 80, 1315–1321.; Olds, T.A., Plášil, J., Kampf, A.R., Burns, P.C., Nash, B.P., Marty, J., Rose, T.P., Carlson, S.M. (2018): Redcanyonite, (NH4)2Mn[(UO2)4O4(SO4)2](H2O)4, a new zippeite group mineral from the Blue Lizard Mine, San Juan County, Utah, USA. Mineralogical Magazine, 82 (6): 1261-1275
Kampf, A.R., Plášil, J., Kasatkin, A.V., Marty, J., and Čejka, J. (2018) Markeyite, a new calcium uranyl carbonate mineral from the Markey mine, San Juan County, Utah, USA. Mineralogical Magazine, 82, 1089-1100.
 
Mineral and/or Locality  
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