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Darapskite (Darapskit)

Pictures (1 Images total)

Darapskit
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Darapskit
nadelige Kristalle von Darapskit, Chilena Mine, El Guanaco, Antofagasta, Chile; BB < 1 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Chile/Antofagasta, Region (II. Region)/Antofagasta, Provinz/Santa Catalina/El Guanaco Erzlagerstätte (Huanaco)/Soledad property/Chilena Mine
Mineral: Darapskite
Image: 1576954936
License: Usage for Mineralienatlas project only
Darapskit

nadelige Kristalle von Darapskit, Chilena Mine, El Guanaco, Antofagasta, Chile; BB < 1 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2019-12-21
Locality: Chilena Mine / Soledad property / El Guanaco Erzlagerstätte (Huanaco) / Santa Catalina / Antofagasta, Provinz / Antofagasta, Region (II. Region) / Chile

Collectors Summary

Color farblos
Streak color weiß
Hardness (Mohs) 2.5
Solubility +++ H2O
Crystal System monoklin, P21/m

Chemism

Chemical formula

Na3(SO4)(NO3)·H2O

Chemical composition

Natrium, Sauerstoff, Schwefel, Stickstoff, Wasserstoff

Unit weight: 245.0528646 u; Number of atoms in the formula: 15

Info

Empirical formula:

Na3(SO4)(NO3)·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.82

2

13.33

1.0079470

2.0158940
Nitrogen

N

5.72

1

6.67

14.0067200

14.0067200
Oxygen

O

52.23

8

53.33

15.9994300

127.9954400
Sodium

Na

28.14

3

20.00

22.9897702

68.9693106
Sulfur

S

13.09

1

6.67

32.0655000

32.0655000

Analysis wt%

Na2O : 38.27, N2O5 : 22.26, SO3 : 32.88, H2O : 7.30 (Ref: Zeitschrift ür Kristallographie 1891)

Strunz 9th edition incl. updates

7.DG.05

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
D: Sulfate (Selenate, etc.) mit weitere Anionen, mit H2O
G: Mit großen bis mittelgroßen Kationen; mit NO3, CO3, B(OH)4, SiO4 oder IO3
05:Darapskit-Gruppe

Lapis Classification

VI/D.16-010

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
D: Wasserhaltige Sulfate, mit fremden Anionen
16: Mittelgroße und sehr große Kationen

Classification by Hölzel

7.DO.100

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
D: Sulfates (+Anions +Water)
O: With other complex Anions

Dana 8th edition

20.01.01.01

20: Compound Nitrates
01: Compound Nitrates with other anions

IMA status

Neudefinition von der CNMNC anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

max. Birefringence

0.098
Birefringence chart\! Darapskite title=Birefringence chart Darapskite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.388

RI value β

1.479

RI value γ / ε

1.486

Ri mean

1.451

2V angle

Biaxial (-) 29°c

Optical Data Luminescence

MW-UV (320nm)

  

grünlich blau

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

11

Space Group

P21/m

Cell parameters a (Å)

10.564

Cell parameters b (Å)

6.913

Cell parameters c (Å)

5.189

Cell parameters a/b or c/a

1.528

Cell parameters c/b

0.751

Cell parameters α

90°

Cell parameters β

102.78

Cell parameters γ

90°

Z

2

Volumne (ų)

369.559

X-Ray Powder Diffraction

10.29(100),
4.13(20),
3.522(20),
3.456(30),
3.266(20),
3.188(20),
2.865(30),
2.594(30)
XRD chart Darapskite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

2.5

VHN (Hardness Vickers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.202 (gemessen)

2.202 ( ρ calc. Mineralienatlas )

Instability

+++ H2O

(Co-)Type locality

(Co-)Type locality

Chile/Antofagasta, Region (II. Region)/Oficina Lautaro/Pampa del Toro

Preface

Author (Name, Year)

Dietze, 1891

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 174

Other languages

German

Darapskit

Spanish

Darapskita

English

Darapskite

French

Darapskite

Russian

Дарапскит

Simplified Chinese

钠硝矾

Alternative Name

English

Nitroglauberite

CNMNC symbol

Symbol

Drp

Locations with GPS information