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Paradamite

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Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico
© 2008, J. Weissman

Show Paradamite Photos (11)
Formula:
Zn
 
2
[OH|AsO
 
4
]
System:TriclinicColour:pale yellow
Lustre:VitreousHardness:3½
Name:From the Greek for "near", para-, and Adamite in allusion to its polymorphic relationship to that species.
Dimorph of:Adamite


Olivenite Group. The triclinic dimorph of Adamite.

Classification of Paradamite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:7/B.06-60
Nickel-Strunz 10th (pending) edition ID:8.BB.35

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
Dana 8th edition ID:41.6.7.2

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq
Hey's CIM Ref.:20.3.2

20 : Arsenates (also arsenates with phosphate, but without other anions)
3 : Arsenates of Zn, Cd or Hg
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Type Occurrence of Paradamite

Type Locality:Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico
Year of Discovery:1956

Physical Properties of Paradamite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:pale yellow
Streak:white
Hardness (Mohs):3½
Cleavage:Perfect

Crystallography of Paradamite

Crystal System:Triclinic
Cell Parameters:a = 5.83Å, b = 6.71Å, c = 5.64Å
α = 104.73°, β = 92.26°, γ = 76.81°
Ratio:a:b:c = 0.869 : 1 : 0.841
Unit Cell Volume:V 207.71 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data: Peaks:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Paradamite

Type:Biaxial (-)
RI values: nα = 1.726 nβ = 1.771 nγ = 1.780
2V:Measured: 50° , Calculated: 46°
Maximum Birefringence:δ = 0.054

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:relatively strong

Chemical Properties of Paradamite

Formula:
Zn
 
2
[OH|AsO
 
4
]
Essential elements:As, H, O, Zn
All elements listed in formula:As, H, O, Zn

Relationship of Paradamite to other Species

Related to:
  • Olivenite Group
    • Related Minerals - Nickel-Strunz Grouping):
    8.BB.05Amblygonite
    (Li,Na)Al[(F,OH)|PO
     
    4
    		]
    8.BB.05Montebrasite
    LiAl[(OH,F)|PO
     
    4
    		]
    8.BB.05Tavorite
    LiFe
    3+
     
    		[OH|PO
     
    4
    		]
    8.BB.10Triplite
    (Mn
    2+
     
    		,Fe
    2+
     
    		)
     
    2
    		[(F,OH)|PO
     
    4
    		]
    8.BB.10Zwieselite
    (Fe
    2+
     
    		,Mn
    2+
     
    		)
     
    2
    		[F|PO
     
    4
    		]
    8.BB.10IMA2004-009
    Mg
     
    2
    		[PO
     
    4
    		](OH)
    8.BB.15Sarkinite
    Mn
    2+
    2
    		[OH|AsO
     
    4
    		]
    8.BB.15Triploidite
    (Mn
    2+
     
    		,Fe
    2+
     
    		)
     
    2
    		[OH|PO
     
    4
    		]
    8.BB.15Wagnerite
    (Mg,Fe
    2+
     
    		)
     
    2
    		[F|PO
     
    4
    		]
    8.BB.15Wolfeite
    (Fe
    2+
     
    		,Mn
    2+
     
    		)
     
    2
    		[OH|PO
     
    4
    		]
    8.BB.15Stanĕkite
    Fe
    3+
     
    		(Mn
    2+
     
    		,Fe
    2+
     
    		,Mg)[O|PO
     
    4
    		]
    8.BB.15Joosteite
    Mn
    2+
     
    		(Mn
    3+
     
    		,Fe
    3+
     
    		)[PO
     
    4
    		]O
    8.BB.20Holtedahlite
    Mg
     
    2
    		[OH|PO
     
    4
    		]
    8.BB.20Satterlyite
    (Fe
    2+
     
    		,Mg,Fe
    3+
     
    		)
     
    2
    		[(OH,O)|PO
     
    4
    		]
    8.BB.25Althausite
    Mg
     
    2
    		[(OH,F)|PO
     
    4
    		]
    8.BB.30Adamite
    Zn
     
    2
    		(AsO
     
    4
    		)(OH)
    8.BB.30Eveite
    Mn
    2+
    2
    		[OH|AsO
     
    4
    		]
    8.BB.30Libethenite
    Cu
     
    2
    		[OH|PO
     
    4
    		]
    8.BB.30Olivenite
    Cu
     
    2
    		[OH|AsO
     
    4
    		]
    8.BB.30Zincolibethenite
    CuZnPO
     
    4
    		OH
    8.BB.30Zincolivenite
    CuZn(AsO
     
    4
    		)(OH)
    8.BB.35Tarbuttite
    Zn
     
    2
    		[OH|PO
     
    4
    		]
    8.BB.40Barbosalite
    Fe
    2+
     
    		Fe
    3+
    2
    		[OH|PO
     
    4
    		]
     
    2
    8.BB.40Hentschelite
    CuFe
    3+
    2
    		[OH|PO
     
    4
    		]
     
    2
    8.BB.40Lazulite
    (Mg,Fe
    2+
     
    		)Al
     
    2
    		[OH|PO
     
    4
    		]
     
    2
    8.BB.40Scorzalite
    (Fe
    2+
     
    		,Mg)Al
     
    2
    		[OH|PO
     
    4
    		]
     
    2
    8.BB.40Wilhelmkleinite
    ZnFe
    3+
    2
    		[OH|AsO
     
    4
    		]
     
    2
    8.BB.45Trolleite
    Al
     
    4
    		[OH|PO
     
    4
    		]
     
    3
    8.BB.50Namibite
    Cu(BiO)
     
    2
    		(VO
     
    4
    		)(OH)
    8.BB.55Phosphoellenbergerite
    Mg
     
    14
    		[(OH)
     
    6
    		|(HPO
     
    4
    		,CO
     
    3
    		)
     
    2
    		|(PO
     
    4
    		)
     
    6
    		]
    8.BB.60Urusovite
    Cu[AlAsO
     
    5
    		]
    8.BB.65Theoparacelsite
    Cu
     
    3
    		[(OH)
     
    2
    		|As
     
    2
    		O
     
    7
    		]
    8.BB.70Turanite
    Cu
     
    5
    		[(OH)
     
    2
    		|VO
     
    4
    		]
     
    2
    8.BB.75Stoiberite
    Cu
     
    5
    		[O
     
    2
    		|(VO
     
    4
    		)
     
    2
    		]
    8.BB.80Fingerite
    Cu
     
    11
    		[O
     
    2
    		|(VO
     
    4
    		)
     
    6
    		]
    8.BB.85Averievite
    Cu
     
    6
    		[O
     
    2
    		|Cl
     
    2
    		|(VO
     
    4
    		)
     
    2
    		]
    8.BB.90Lipscombite
    (Fe
    2+
     
    		,Mn
    2+
     
    		)Fe
    3+
    2
    		[OH|PO
     
    4
    		]
     
    2
    8.BB.90Richellite
    Ca
     
    3
    		Fe
    3+
    10
    		[(OH,F)
     
    3
    		|(PO
     
    4
    		)
     
    2
    		]
     
    4
    		 · nH
     
    2
    		O (not confirmed)
    8.BB.90Zinclipscombite
    ZnFe
    3+
    2
    		(PO
     
    4
    		)
     
    2
    		(OH)
     
    2
    Related Minerals - Hey's Index Grouping:
    20.3.1Adamite
    Zn
     
    2
    		(AsO
     
    4
    		)(OH)
    20.3.3Koritnigite
    Zn[HAsO
     
    4
    		] · H
     
    2
    		O
    20.3.4Legrandite
    Zn
     
    2
    		[OH|AsO
     
    4
    		] · H
     
    2
    		O
    20.3.5Warikahnite
    Zn
     
    3
    		(AsO
     
    4
    		)
     
    2
    		·2H
     
    2
    		O
    20.3.6Köttigite
    Zn
     
    3
    		(AsO
     
    4
    		)
     
    2
    		·8H
     
    2
    		O
    20.3.7Stranskiite
    (Zn,Cu)
     
    3
    		[AsO
     
    4
    		]
     
    2
    20.3.8Philipsburgite
    (Cu,Zn)
     
    6
    		[(OH)
     
    3
    		|(AsO
     
    4
    		,PO
     
    4
    		)]
     
    2
    		 · H
     
    2
    		O
    20.3.9Austinite
    CaZn[OH|AsO
     
    4
    		]
    20.3.10Prosperite
    CaZn
     
    2
    		[OH|HAsO
     
    4
    		|AsO
     
    4
    		]
    20.3.11Gaitite
    Ca
     
    2
    		Zn[AsO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    20.3.12Zincroselite
    Ca
     
    2
    		Zn[AsO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    20.3.13O'Danielite
    Na(Zn,Mg)
     
    3
    		H
     
    2
    		(AsO
     
    4
    		)
     
    3
    20.3.14Johillerite
    Na(Mg,Zn)
     
    3
    		Cu[AsO
     
    4
    		]
     
    3
    20.3.15Holdenite
    (Mn
    2+
     
    		,Mg)
     
    6
    		Zn
     
    3
    		[(OH)
     
    8
    		|(AsO
     
    4
    		)
     
    2
    		|SiO
     
    4
    		]
    20.3.16Chudobaite
    (Na,K)(Mg,Zn)
     
    2
    		H(AsO
     
    4
    		)(OH,O)
     
    6
    20.3.17Chlorophoenicite
    (Mn,Mg)
     
    3
    		Zn
     
    2
    		(AsO
     
    4
    		)(OH,O)
     
    6
    20.3.18Lotharmeyerite
    Ca(Zn,Mn
    3+
     
    		)
     
    2
    		[AsO
     
    4
    		]
     
    2
    		 · 2(H
     
    2
    		O,OH)
    20.3.19Metaköttigite
    (Zn,Fe,Fe)
     
    3
    		(AsO
     
    4
    		)
     
    2
    		·8(H
     
    2
    		O,OH)
    20.3.20Ojuelaite
    ZnFe
    3+
    2
    		(AsO
     
    4
    		)
     
    2
    		(OH)
     
    2
    		 · 4H
     
    2
    		O
    20.3.21Fahleite
    Zn
     
    5
    		CaFe
     
    2
    		(AsO
     
    4
    		)
     
    6
    		·14H
     
    2
    		O
    20.3.22Keyite
    (Cu,Zn,Cd)
     
    3
    		(AsO
     
    4
    		)
     
    2

    Other Names for Paradamite

    German names:
    Paradamit
    Russian names:
    Парадамит
    Spanish names:
    Paradamita

    Other Information

    Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

    References for Paradamite

    Reference List:American Mineralogist (1956): 41: 958.

    American Mineralogist (1980): 65: 353-354.

    Mineralogical Journal: 8: 320-328.

    Acta Crystallographica (1979): B35: 720.

    Internet Links for Paradamite

    Search Engines:
  • Look for Paradamite on Google
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    • External Links:
  • Look for Paradamite on Webmineral
  • Look for Paradamite on Athena Mineralogy
  • Look for Paradamite on Wikipedia
  • Look for Paradamite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Paradamite in the Natural History Museum (London) online catalogue
  • Paradamite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Buy fine minerals and gemstones from Pala International
  • Find Paradamite on www.crystalclassics.co.uk
  • Wendel Minerals - Auktion & Shop
  • Buy Fine Minerals from mineralsweb.com
  • Search for Paradamite at Thames Valley Minerals
  • Wright's Rock Shop - excellent mineral specimens since 1970
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  • Buy Minerals and Crystals from Crystalarium.com
  • Rare and Unusual minerals at Mineralogical Research Company
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    Localities for Paradamite

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    (TL) indicates type locality. ? 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.
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Agios Konstantinos [St Constantine] (Kamareza; Kamariza)
            • Kamareza Mines
    		No reference listed
    Mexico
     
    • Durango
      • Mun. de Mapimí
        • Mapimí
    		Science (1956) 123, p. 1039; Rocks & Min.: 56:247.
    Namibia
     
    • Otjikoto (Oshikoto) Region
      • Tsumeb
    		No reference listed
    Mineral and/or Locality
    Google
     
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