Sampleite Mineral Data

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General Sampleite Information

Chemical Formula:

NaCaCu5(PO4)4Cl•5(H2O)

Composition:

Molecular Weight = 875.95 gm

Potassium 1.34 % K 1.61 % K₂O

Sodium 2.36 % Na 3.18 % Na₂O

Calcium 4.12 % Ca 5.76 % CaO

Magnesium 0.28 % Mg 0.46 % MgO

Copper 34.82 % Cu 39.21 % Cu₂O

Phosphorus 14.14 % P 32.41 % P₂O₅

Hydrogen 1.08 % H 9.67 % H₂O

Chlorine 4.05 % Cl 4.05 % Cl

- % Cl -0.91 % -O=Cl₂

Oxygen 37.81 % O

______ ______

100.00 % 95.43 % = TOTAL OXIDE

Empirical Formula:

Na_0.9K_0.3Ca_0.9Mg_0.1Cu_4.8(PO₄)₄Cl•4.7(H₂O)

Environment:

Oxidized zone of copper deposits in arid climates. In caves derived from copper sulfides and phosphate from bat quano.

IMA Status:

Valid Species (Pre-IMA) 1942

Locality:

Antofagasta, Chuquicamata, Chile. Link to MinDat.org Location Data.

Name Origin:

Named for Mat Sample, mine superintendent, Chuquicamata, Chile.

Name Pronunciation:

Sampleite + Pronunciation

Sampleite Image

Images:

Sampleite

Comments: Sampleite crystal groups 3 to 8 mm wide on a dark matrix.
Location: Santa Catalina Mine, Sierra Gorda, Chile. Scale: Picture size 1 cm.
© John Veevaert

Images:

Sampleite

Comments: Sky blue lamellar crystals of sampleite up to 2 mm. scattered on matrix.
Location: Chuquicamata, Antofagasta, Chile. Scale: Picture size 2 cm.
© Sandro Maggia/Minernet.it

Images:

Sampleite

Comments: Blue, spherical, radial crystalling aggregates of sampleite on a fracture surface.
Location: North Parkes Mine, Parkes, New South Wales, Australia. Scale: Picture size 6x5 cm.
© Dave Barthelmy

Sampleite Crystallography

Axial Ratios:

a:b:c =0.2526:1:0.2513

Cell Dimensions:

a = 9.7, b = 38.4, c = 9.65, Z = 8; V = 3,594.43 Den(Calc)= 3.24

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: pseudo TET

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 9.6(1), 3.04(1), 1.71(0.8),4.3(0.8), 1.79(0.7), 3.89(0.7), 6.85(0.7),

Forms:

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Forms: ( 1 5 0) ( 0 1 0) ( 1 1 1) ( 1 1 0) ( 0 2 1) ( 0 0 1)

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Crystal Structure:

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Giester G , Kolitsch U , Leverett P , Turner P , Williams P A , European Journal of Mineralogy , 19 (2007) p.75-93, The crystal structures of lavendulan, sampleite, and a new polymorph of sampleite, Locality: Lake Boga, Victoria, Australia

Physical Properties of Sampleite

Cleavage:

{010} Perfect, {100} Good, {001} Good

Color:

Bluish green, Light blue.

Density:

3.2

Diaphaneity:

Transparent

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.

Habit:

Rosette - Bundled tabular aggregates resembling rose flower petals.

Hardness:

4 - Fluorite

Luster:

Pearly

Streak:

bluish white

Optical Properties of Sampleite

Gladstone-Dale:

CI meas= 0.056 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.067 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2042,KPDmeas= 0.2068,KC= 0.2189
Ncalc = 1.7 - 1.71

Optical Data:

Biaxial (-), a=1.629, b=1.677, g=1.679, bire=0.0500, 2V(Calc)=22, 2V(Meas)=5-23. Dispersion r > v.

Pleochroism (x):

deep blue or green blue.

Pleochroism (y):

light blue or turquoise blue.

Pleochroism (z):

turquoise blue or colorless.

Calculated Properties of Sampleite

Electron Density:

Bulk Density (Electron Density)=3.11 gm/cc
note: Specific Gravity of Sampleite =3.20 gm/cc.

Fermion Index:

Fermion Index = 0.0005177723
Boson Index = 0.9994822277

Photoelectric:

PE_Sampleite= 16.75 barns/electron
U=PE_Sampleite x r_electron= 52.14 barns/cc.

Radioactivity:

GRapi = 18.80 (Gamma Ray American Petroleum Institute Units)
Concentration of Sampleite per GRapi unit = 5.32 (%)

Estimated Radioactivity from Sampleite - barely detectable

Sampleite Classification

Dana Class:

42.09.04.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.09)where (A)3 (XO4)2 Zq · x(H2O)

(42.09.04)Dana Group

42.09.04.01 Sampleite NaCaCu5(PO4)4Cl•5(H2O) pseudo TET 2/m 2/m 2/m

42.09.04.02 Lavendulan NaCaCu5(AsO4)4Cl•5(H2O) Unk Ortho

42.09.04.03 Zdenekite NaPbCu5(AsO4)4Cl•5(H2O) P 4₁22,P 4₃22 4 2 2

42.09.04.04 Mahnertite! (Na,Ca)Cu3(AsO4)2Cl•5(H2O) I 4mmm 4 2 2

42.09.04.05 Lemanskiite! NaCaCu5(AsO4)4Cl•5H2O P 4₁22 or P 4₃22 4 2 2

Strunz Class:

08.DG.05 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DG -With large and medium-sized cations, (OH, etc.):RO4 < 0.5:1

08.DG.05 Lavendulan NaCaCu5(AsO4)4Cl•5(H2O) Unk Ortho

08.DG.05 Shubnikovite Ca2Cu8(AsO4)6Cl(OH)•7(H2O)(?) Unk Ortho

08.DG.05 Sampleite NaCaCu5(PO4)4Cl•5(H2O) pseudo TET 2/m 2/m 2/m

08.DG.05 Zinclavendulan? NaCa(Zn,Cu)5(AsO4)4Cl•4-5(H2O) Unk Ortho

08.DG.05 Lemanskiite! NaCaCu5(AsO4)4Cl•5H2O P 4₁22 or P 4₃22 4 2 2

08.DG.05 Zdenekite NaPbCu5(AsO4)4Cl•5(H2O) P 4₁22,P 4₃22 4 2 2

Other Sampleite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(AntBidBlaNic4) OPTIC PROP.(AntBidBlaNic4)

See Also:

Links to other databases for Sampleite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Sampleite Specimen Label here :

Sampleite

NaCaCu5(PO4)4Cl•5(H2O)
Dana No: 42.09.04.01 Strunz No: 08.DG.05
Locality:

Notes: