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Adamite

This page kindly sponsored by Mariusz Oleszczuk
Formula:
Zn2(AsO4)(OH)
System:
Orthorhombic
Colour:
Ideally white, ...
Lustre:
Vitreous, Sub-Vitreous, Waxy, Greasy
Hardness:
Member of:
Name:
Named by Charles Friedel in 1866 for Gilbert-Joseph Adam (April 7, 1795 Seine-et-Marne, Fontainbleu, France - 1881 Paris, France), Inspector (Auditor) of Finance for the French Government and who who supplied the first specimens of his mineral. Adam was a wealthy mineral collector and his mineral collection was described in Annales des Mines in 1869 and later in a published catalog (1869). Adam was also the discoverer of aerugite, chenevixite, corkite, cuprotungstite, scacchite, and xanthiosite. Adam's mineral collection was acquired by the École des Mines, Paris, France. Adam was a member of Société géologique de France and received the honor of Commandeur de la Légion d'Honneur.
Dimorph of:
Olivenite Group.
The orthorhombic dimorph of Paradamite.
Adamite-Olivenite Series

Adamite forms a solid solution with the copper arsenate Olivenite, and the intermediate, structurally distinct member Zincolivenite. (Note: 'zincolivenite' or 'Zn-olivenite' were also used for Zn-bearing olivenites with unspecified Zn:Cu ratios prior to the recognition and approval of zincolivenite as a distinct species.)

A secondary mineral found in zinc deposits containing arsenic-bearing minerals.

Visit gemdat.org for gemological information about Adamite.

Classification of Adamite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered" 1866
8.BB.30

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 7th ed.:
41.6.6.3
41.6.6.3

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq
20.3.1

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

Year of Discovery:
1866
Associated Minerals at Type Locality:

Occurrences of Adamite

Geological Setting:
A secondary mineral in the oxidised zone of zinc- and arsenic-bearing hydrothermal mineral deposits.

Physical Properties of Adamite

Vitreous, Sub-Vitreous, Waxy, Greasy
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Ideally white, colourless, frequently pale yellow, honey-yellow, brownish yellow, rose red; blue, pale green to green, may be zoned; bright green (cuprian); bright pink, purple (cobaltian)
Comment:
colourless or faintly tinted in transmitted light.
Streak:
white
Hardness (Mohs):
Hardness Data:
Measured
Tenacity:
Very brittle
Cleavage:
Distinct/Good
on {101}, good; on {010}, poor.
Fracture:
Irregular/Uneven, Conchoidal
Density:
4.32 - 4.48 g/cm3 (Measured)    4.435 g/cm3 (Calculated)

Crystallography of Adamite

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnnm
Space Group Setting:
Pnnm
Cell Parameters:
a = 8.304Å, b = 8.524Å, c = 6.036Å
Ratio:
a:b:c = 0.974 : 1 : 0.708
Unit Cell Volume:
V 427.25 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals of variable morphology. Often elongated [010], also elongated [001], rarely elongated [100]. Tabular at times {101} or equant. Commonly forms radial aggregates, fanlike rosettes or crystalline crusts.

Crystallographic forms of Adamite

Crystal Atlas:
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Click on an icon to view
Adamite no.1 - Goldschmidt (1913)
Adamite no.5 - Goldschmidt (1913)
Adamite no.6 - Goldschmidt (1913)
Adamite no.7 - Goldschmidt (1913)
Adamite no.8 - Goldschmidt (1913)
Adamite no.9 - Goldschmidt (1913)
Adamite no.10 - Goldschmidt (1913)
3d models and HTML5 code kindly provided by www.smorf.nl.

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Edge Lines | Miller Indicies | Axes

Transparency
Opaque | Translucent | Transparent

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Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
X-Ray Powder Diffraction Data:
d-spacingIntensity
5.944 (60)
4.897 (90)
4.242 (60)
2.967 (90)
2.698 (80)
2.448 (100)
1.608 (80)

Optical Data of Adamite

Type:
Biaxial (+/-)
RI values:
nα = 1.708 - 1.722 nβ = 1.742 - 1.744 nγ = 1.763 - 1.773
2V:
Measured: 78° to 90°, Calculated: 74° to 84°
Birefringence:
0.05
Max Birefringence:
δ = 0.055
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
strong r > v or r < v
Pleochroism:
Weak
Comments:
In pale colours if cuprian or cobaltian.

Chemical Properties of Adamite

Formula:
Zn2(AsO4)(OH)
Essential elements:
All elements listed in formula:
Common Impurities:
Cu,Fe,Co

Relationship of Adamite to other Species

Series:
Forms a series with Olivenite (see here)
Member of:
Other Members of Group:
AuriacusiteFe3+Cu2+(AsO4)O
EveiteMn22+(AsO4)(OH)
LibetheniteCu2(PO4)(OH)
OliveniteCu2(AsO4)(OH)
ZincolibetheniteCuZn(PO4)(OH)
ZincoliveniteCuZn(AsO4)(OH)
8.BB.05AmblygoniteLiAl(PO4)F
8.BB.05MontebrasiteLiAl(PO4)(OH)
8.BB.05TavoriteLiFe3+(PO4)(OH)
8.BB.10Triplite(Mn2+,Fe2+)2(PO4)(F,OH)
8.BB.10Zwieselite(Fe2+,Mn2+)2(PO4)F
8.BB.15SarkiniteMn22+(AsO4)(OH)
8.BB.15Triploidite(Mn2+,Fe2+)2(PO4)(OH)
8.BB.15Wagnerite(Mg,Fe2+)2(PO4)F
8.BB.15Wolfeite(Fe2+,Mn2+)2(PO4)(OH)
8.BB.15Stanĕkite(Mn2+,Fe2+,Mg)Fe3+(PO4)O
8.BB.15JoosteiteMn2+(Mn3+,Fe3+)(PO4)O
8.BB.15HydroxylwagneriteMg2(PO4)(OH)
8.BB.20HoltedahliteMg2(PO4)(OH)
8.BB.20Satterlyite(Fe2+,Mg,Fe3+)2(PO4)(OH,O)
8.BB.25AlthausiteMg4(PO4)2(OH,O)(F,☐)
8.BB.30EveiteMn22+(AsO4)(OH)
8.BB.30LibetheniteCu2(PO4)(OH)
8.BB.30OliveniteCu2(AsO4)(OH)
8.BB.30ZincolibetheniteCuZn(PO4)(OH)
8.BB.30ZincoliveniteCuZn(AsO4)(OH)
8.BB.30AuriacusiteFe3+Cu2+(AsO4)O
8.BB.35ParadamiteZn2(AsO4)(OH)
8.BB.35TarbuttiteZn2(PO4)(OH)
8.BB.40BarbosaliteFe2+Fe23+(PO4)2(OH)2
8.BB.40HentscheliteCuFe23+(PO4)2(OH)2
8.BB.40Lazulite(Mg,Fe2+)Al2(PO4)2(OH)2
8.BB.40ScorzaliteFe2+Al2(PO4)2(OH)2
8.BB.40WilhelmkleiniteZnFe23+(AsO4)2(OH)2
8.BB.45TrolleiteAl4(PO4)3(OH)3
8.BB.50NamibiteCu(BiO)2(VO4)(OH)
8.BB.55Phosphoellenbergerite(Mg,◻)2Mg12(PO4,PO3OH)6(PO3OH,CO3)2(OH)6
8.BB.60UrusoviteCuAl(AsO4)O
8.BB.65TheoparacelsiteCu3(As2O7)(OH)2
8.BB.70TuraniteCu5(VO4)2(OH)4
8.BB.75StoiberiteCu5(VO4)2O2
8.BB.80FingeriteCu11(VO4)6O2
8.BB.85AverieviteCu6(VO4)2O2Cl2
8.BB.90LipscombiteFe2+Fe23+(PO4)2(OH)2
8.BB.90RichelliteCaFe23+(PO4)2(OH,F)2
8.BB.90ZinclipscombiteZnFe23+(PO4)2(OH)2
20.3.2ParadamiteZn2(AsO4)(OH)
20.3.3KoritnigiteZn(HAsO4) · H2O
20.3.4LegranditeZn2(AsO4)(OH) · H2O
20.3.5WarikahniteZn3(AsO4)2 · 2H2O
20.3.6KöttigiteZn3(AsO4)2 · 8H2O
20.3.7StranskiiteZn2Cu(AsO4)2
20.3.8Philipsburgite(Cu,Zn)6(AsO4,PO4)2(OH)6 · H2O
20.3.9AustiniteCaZn(AsO4)(OH)
20.3.10ProsperiteCaZn2(AsO4)(HAsO4)(OH)
20.3.11GaititeCa2Zn(AsO4)2 · 2H2O
20.3.12ZincroseliteCa2Zn(AsO4)2 · 2H2O
20.3.13O'DanieliteNa(Zn,Mg)3H2(AsO4)3
20.3.14JohilleriteNa(Mg,Zn)3Cu(AsO4)3
20.3.15Holdenite(Mn2+,Mg)6Zn3(AsO4)2(SiO4)(OH)8
20.3.16Chudobaite(Mg,Zn)5(AsO4)2(HAsO4)2 · 10H2O
20.3.17Chlorophoenicite(Mn,Mg)3Zn2(AsO4)(OH,O)6
20.3.18LotharmeyeriteCa(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)
20.3.19Metaköttigite(Zn,Fe,Fe)3(AsO4)2 · 8(H2O,OH)
20.3.20OjuelaiteZnFe23+(AsO4)2(OH)2 · 4H2O
20.3.21FahleiteZn5CaFe2(AsO4)6 · 14H2O
20.3.22KeyiteCu32+Zn4Cd2(AsO4)6 · 2H2O

Other Names for Adamite

Name in Other Languages:
Basque:Adamita
Catalan:Adamita
Dutch:Adamiet
Estonian:Adamiit
Italian:Adamite
Latvian:Adamīns
Low Saxon:Adamin
Polish:Adamin
Portuguese:Adamite
Russian:Адамин
Simplified Chinese:水砷锌矿
羟砷锌石
Slovak:Adamit
Spanish:Adamita
Swedish:Adamit
Traditional Chinese:水砷鋅礦
羥砷鋅石
Ukrainian:Адамін

Other Information

May fluoresce or phosphoresce lemon-yellow under SW and LW UV.
Other Information:
Readily soluble in dilute acids.
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 Adamite

Reference List:
Friedel (1866) Comptes rendus de l’Académie des sciences de Paris, 62, 692 (as Adamine).

Damour (1868) Comptes rendus de l’Académie des sciences de Paris: 67: 1124.

Dana, J.D. (1868) System of Mineralogy, 5th. Edition, New York: 565.

Pisani (1870) Comptes rendus de l’Académie des sciences de Paris: 70: 1001.

Friedel (1878) Bulletin de la Société française de Minéralogie: 1: 31.

de Schulten (1903) Bulletin de la Société française de Minéralogie: 26: 91.

Rosický (1910) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 48: 656.

Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 35.

Ungemach (1922) Bulletin de la Société française de Minéralogie: 44: 122.

Hintze, Carl (1931) Handbuch der Mineralogie. Berlin and Leipzig. 6 volumes: 1 [4A]: 649.

Larsen, E.S. and Berman, H. (1934) The Microscopic Determination of the Nonopaque Minerals, Second edition, USGS Bulletin 848: 195.

Strunz (1936) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 94: 60.

Kokkoros (1937) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 96: 417.

Kukharenko (1939) Mineralogicheskoe Obshchestvo, Leningrad, Zapiski: 68[2]: 589.

Mrose (1948) American Mineralogist: 33: 449.

American Mineralogist (1976): 61: 979.

Canadian Mineralogist (1976): 14: 143.

Acta Crystallographica (1978): B34: 715.

Anthony, J.W., Bideaux, R.A., Bladh, K.W., and Nichols, M.C. (2000) Handbook of Mineralogy, Volume IV. Arsenates, Phosphates, Vanadates. Mineral Data Publishing, Tucson, AZ, 680pp.: 4: 2.

Mineralogical Journal: 6: 320-328.

Internet Links for Adamite

Specimens:
The following Adamite specimens are currently listed for sale on minfind.com.

Localities for Adamite

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.
Mineral and/or Locality  
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