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Aldridgeite

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About AldridgeiteHide

Formula:
(Cd,Ca)(Cu,Zn)4(SO4)2(OH)6 · 3H2O
Colour:
Pale blue
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
3.25
Crystal System:
Monoclinic
Member of:
Isostructural with:
Cd-analogue of serpierite.


Classification of AldridgeiteHide

Approved
Approval Year:
2010
7.DF.

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations

Pronounciation of AldridgeiteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of AldridgeiteHide

Vitreous
Colour:
Pale blue
Streak:
Pale blue
Hardness:
Comment:
Estimated
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
3.25 g/cm3 (Measured)    3.33 g/cm3 (Calculated)

Optical Data of AldridgeiteHide

Type:
Biaxial (-)
RI values:
nα = 1.596(3) nβ = 1.636(3) nγ = 1.643(3)
2V:
Calculated: 44.5°
Max Birefringence:
δ = 0.047
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Weak
Comments:
With X pale yellowish blue, Y pale blue, Z pale greenish blue.

Chemical Properties of AldridgeiteHide

Formula:
(Cd,Ca)(Cu,Zn)4(SO4)2(OH)6 · 3H2O
IMA Formula:
(Cd,Ca)(Cu,Zn)4(SO4)2(OH)6 · 3H2O

Crystallography of AldridgeiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 22.049(2) Å, b = 6.212(2) Å, c = 21.839(2) Å
β = 113.19(3)°
Ratio:
a:b:c = 3.549 : 1 : 3.516
Unit Cell V:
2749.8 ų
Z:
8
Morphology:
Forming sprays of acicular crystals to 0.8 mm across

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.167 (100)
5.076 (55)
3.380 (35)
2.704 (30)
2.645 (60)
2.612 (30)
2.439 (50)
2.167 (35)

Type Occurrence of AldridgeiteHide

General Appearance of Type Material:
Incavities in a quartz-garnet-smithsonite matrix.
Place of Conservation of Type Material:
Type material is deposited in the collections of the South Australian Museum, Adelaide, South Australia, registration number G33030.
Associated Minerals at Type Locality:

Synonyms of AldridgeiteHide

Relationship of Aldridgeite to other SpeciesHide

Member of:
Other Members of this group:
CampigliaiteMn2+Cu4(SO4)2(OH)6 · 4H2OMon.
DevillineCaCu4(SO4)2(OH)6 · 3H2OMon. 2/m : P21/b
KobyasheviteCu5(SO4)2(OH)6·4H2OTric. 1 : P1
LautenthalitePbCu4(SO4)2(OH)6 · 3H2OMon. 2/m : P21/b
Unnamed (Dimorph of Devilline)CaCu4(SO4)2(OH)6 · 3H2OMon. 2/m : P21/b

Common AssociatesHide

Associated Minerals Based on Photo Data:
Niedermayrite1 photo of Aldridgeite associated with Niedermayrite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

7.DF.AlcaparrosaiteK3Ti4+Fe3+(SO4)4O(H2O)2Mon. 2/m : B2/b
7.DF.05UklonskoviteNaMg(SO4)F · 2H2OMon.
7.DF.10KainiteKMg(SO4)Cl · 3H2OMon. 2/m : B2/m
7.DF.15NatrochalciteNaCu2(SO4)2(OH) · 2H2OMon. 2/m : B2/m
7.DF.20MetasideronatriteNa2Fe(SO4)2(OH) · H2OOrth. mmm (2/m 2/m 2/m)
7.DF.20SideronatriteNa2Fe(SO4)2(OH) · 3H2OOrth. 2 2 2 : P21 21 21
7.DF.25DespujolsiteCa3Mn4+(SO4)2(OH)6 · 3H2OHex. 6 m2 : P62c
7.DF.25FleischeritePb3Ge(SO4)2(OH)6 · 3H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
7.DF.25SchaurteiteCa3Ge(SO4)2(OH)6 · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
7.DF.25MallestigitePb3Sb5+(SO4)(AsO4)(OH)6 · 3H2OHex. 6 : P63
7.DF.30Slavíkite(H3O+)3Mg6Fe15(SO4)21(OH)18 · 98H2OTrig. 3 : R3
7.DF.35MetavoltineNa6K2FeFe6(SO4)12O2 · 18H2OTrig.
7.DF.40LannoniteMg2Ca4Al4(SO4)8F8 · 24H2O Tet. 4/m : I4/m
7.DF.40VlodavetsiteAlCa2(SO4)2F2Cl · 4H2OTet. 4/m : I4/m
7.DF.45PeretaiteCa(SbO)4(SO4)2(OH)2 · 2H2OMon. 2/m : B2/b
7.DF.50GordaiteNaZn4(SO4)(OH)6Cl · 6H2OTrig. 3 : P3
7.DF.55Clairite(NH4)2Fe3(SO4)4(OH)3 · 3H2OTric.
7.DF.60ArzruniteCu4Pb2(SO4)(OH)4Cl6 · 2H2O (?)Orth.
7.DF.65ElyitePb4Cu(SO4)O2(OH)4 · H2OMon. 2/m
7.DF.70YecoraiteFe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O
7.DF.75RiomarinaiteBi(SO4)(OH) · H2OMon. 2/m
7.DF.80DukeiteBi3+24Cr6+8O57(OH)6 · 3H2OTrig. 3m : P3 1c
7.DF.85XocolatliteCa2Mn4+2(Te6+O6)2 · H2OMon. 2/m : P2/m

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 AldridgeiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Elliott, P. and Pring, A. (2010) Aldridgeite, IMA 2010-029. CNMNC Newsletter, August 2010, page 800; Mineralogical Magazine, 74, 797-800.
Elliott, P., and Pring, A. (2015) Aldridgeite, a new mineral from the Block 14 Opencut, Broken Hill, New South Wales. Australian Journal of Mineralogy, 17, 67–71.

Internet Links for AldridgeiteHide

Localities for AldridgeiteHide

ⓘ - 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.
Australia (TL)
 
  • New South Wales
    • Yancowinna Co.
      • Broken Hill district
        • Broken Hill
Elliott, P. and Pring, A. (2010) Aldridgeite, IMA 2010-029. CNMNC Newsletter, August 2010, page 800; Mineralogical Magazine, 74, 797-800.; Elliott, P., and Pring, A. (2015) Aldridgeite, a new mineral from the Block 14 Opencut, Broken Hill, New South Wales. Australian Journal of Mineralogy, 17, 67–71.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium; Lavreotiki Municipality)
      • Lavrion District Mines
        • Lavrion (Laurion; Laurium)
Rieck, B., Kolitsch, U., Voudouris, P., Giester, G. and Tzeferis, P. (2018): Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt 29 (5), 32-77 (in German).
USA
 
  • New Mexico
    • Socorro Co.
      • Magdalena District
        • Magdalena
pxrd & eds via Dr. Tony Kampf
Mineral and/or Locality  
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