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Dellaite

Pictures (1 Images total)

Dellait
Views (File:
1479038087
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Dellait
von der Mina Negra, Maconi, Municipio de Cadereyta, Queretaro, Mexiko; körnig, farblos; BB = 3,0 mm
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A000306, Donator: Klaus Fleck
Location: Mexiko/Queretaro/Cadereyta, Municipio/Maconi/Negra Mine
Mineral: Dellaite
Image: 1479038087
License: Usage for Mineralienatlas project only
Dellait (SNr: A000306)

von der Mina Negra, Maconi, Municipio de Cadereyta, Queretaro, Mexiko; körnig, farblos; BB = 3,0 mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2016-11-13
Locality: Negra Mine / Maconi / Cadereyta, Municipio / Queretaro / Mexiko

Collectors Summary

Color farblos
Streak color weiß
Crystal System triklin, P1

Chemism

Chemical formula

Ca6Si3O11(OH)2

Chemical composition

Calcium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 534.735474 u; Number of atoms in the formula: 24

Info

Empirical formula:

Ca6Si3O11(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.38

2

8.33

1.0079470

2.0158940

Oxygen

O

38.90

13

54.17

15.9994300

207.9925900

Silicon

Si

15.76

3

12.50

28.0855300

84.2565900

Calcium

Ca

44.97

6

25.00

40.0784000

240.4704000

Analysis wt%

SiO2 : 33.71, CaO : 62.92, H2O : 3.37 (Ref: Mineralogical Magazine 2011)

Strunz 9th edition incl. updates

9.BG.45

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
G: Gruppen(Soro)-Silikate mit gemischten SiO4 und Si2O7 Gruppen; Kationen in oktahedraler [6] und größerer Koordination
45:Dellait-Gruppe

Lapis Classification

VIII/C.22-010

VIII: SILIKATE
C: Gruppensilikate
22: Mischstrukturen mit [SiO4] 4--Inseln und [Si2O7] 6--Gruppen

Classification by Hölzel

9.BN.815

9: SILICATES
B: Sorosilicates
N: With SiO4 + Si2O7
8: Not classified

Dana 8th edition

78.01.04.01

78: Unclassified Silicate Minerals
01: Unclassified silicates possible nesosilicates

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

max. Birefringence

0.010

Birefringence chart\! Dellaite title=Birefringence chart Dellaite

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

1.650

RI value β

1.661

RI value γ / ε

1.664

Ri mean

1.658

2V angle

Biaxial (-) 50°

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

6.815

Cell parameters b (Å)

6.934

Cell parameters c (Å)

12.882

Cell parameters a/b or c/a

0.983

Cell parameters c/b

1.858

Cell parameters α

90.67

Cell parameters β

97.70

Cell parameters γ

98.13

Z

2

Volumne (ų)

596.898

X-Ray Powder Diffraction

6.90(20),
3.435(70),
3.349(20),
3.258(20),
3.067(50),
2.986(40),
2.823(30),
2.290(100)

XRD chart Dellaite

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

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

2.97 (berechnet)

2.975 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

UK/Schottland/Highland/Ardnamurchan/Kilchoan

Preface

Author (Name, Year)

Agrell, 1965

References

Mineralogical Magazine 34 (1965), 1

Other languages

German

Dellait

English

Dellaite

French

Dellaite

Spanish

Dellaíta

Russian

Деллаит

CNMNC (IMA)-Number

IMA 1964-005

CNMNC symbol

Symbol

Dll

Locations with GPS information