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Makatite (Makatit)

Pictures (17 Images total)

Makatit mit Tuperssuatsiait
Views (File:
1319292002
): 2049, Rating: 8.75
Makatit mit Tuperssuatsiait
Größe: 7,2 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia
Copyright: Enrico Bonacina; Contribution: Hg
Location: Namibia/Khomas, Region/Windhoek-Land, Kreis/Aris/Aris-Steinbrüche (Ariskop Quarry; Railway Quarry)
Mineral: Makatite
Image: 1319292002
Rating: 8.75 (votes: 8)
License: Usage for Mineralienatlas project only
Makatit mit Tuperssuatsiait

Größe: 7,2 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia
Copyright: Enrico Bonacina
Contribution: Hg 2011-10-22
Locality: Aris-Steinbrüche (Ariskop Quarry; Railway Quarry) / Aris / Windhoek-Land, Kreis / Khomas, Region / Namibia
Makatit mit Tuperssuatsiait
Views (File:
1328541704
): 1359, Rating: 9
Makatit mit Tuperssuatsiait
Größe: 5,11 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Namibia/Khomas, Region/Windhoek-Land, Kreis/Aris/Aris-Steinbrüche (Ariskop Quarry; Railway Quarry)
Mineral: Makatite
Image: 1328541704
Rating: 9 (votes: 4)
License: Usage for Mineralienatlas project only
Makatit mit Tuperssuatsiait

Größe: 5,11 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia
Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2012-02-06
Locality: Aris-Steinbrüche (Ariskop Quarry; Railway Quarry) / Aris / Windhoek-Land, Kreis / Khomas, Region / Namibia
Makatit
Views (File:
1252331859
): 1626
Makatit
Bildbreite: 3 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Namibia/Khomas, Region/Windhoek-Land, Kreis/Aris/Aris-Steinbrüche (Ariskop Quarry; Railway Quarry)
Mineral: Makatite
Image: 1252331859
Rating: 8.5 (votes: 2)
License: Usage for Mineralienatlas project only
Makatit

Bildbreite: 3 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia
Copyright: Stephan Wolfsried
Contribution: Hg 2009-09-07
Locality: Aris-Steinbrüche (Ariskop Quarry; Railway Quarry) / Aris / Windhoek-Land, Kreis / Khomas, Region / Namibia
Makatit
Views (File:
1388389203
): 909
Makatit
Aris, Windhoek, Khomas, Namibia, Bildbreite 1,5 mm.
Copyright: Ulrich Baumgärtl; Contribution: Ulrich Baumgärtl
Collection: Ulrich Baumgärtl
Location: Namibia/Khomas, Region/Windhoek-Land, Kreis/Aris/Aris-Steinbrüche (Ariskop Quarry; Railway Quarry)
Mineral: Makatite
Image: 1388389203
Rating: 6.5 (votes: 2)
License: Usage for Mineralienatlas project only
Makatit

Aris, Windhoek, Khomas, Namibia, Bildbreite 1,5 mm.
Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: Ulrich Baumgärtl 2013-12-30
Locality: Aris-Steinbrüche (Ariskop Quarry; Railway Quarry) / Aris / Windhoek-Land, Kreis / Khomas, Region / Namibia
Makatit
Views (File:
1319291932
): 882
Makatit
Größe: 6,8 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia
Copyright: Enrico Bonacina; Contribution: Hg
Location: Namibia/Khomas, Region/Windhoek-Land, Kreis/Aris/Aris-Steinbrüche (Ariskop Quarry; Railway Quarry)
Mineral: Makatite
Image: 1319291932
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Makatit

Größe: 6,8 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia
Copyright: Enrico Bonacina
Contribution: Hg 2011-10-22
Locality: Aris-Steinbrüche (Ariskop Quarry; Railway Quarry) / Aris / Windhoek-Land, Kreis / Khomas, Region / Namibia
Makatit
Views (File:
1247687266
): 940
Makatit
Bildbreite: 12 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia
Copyright: Joachim Esche; Contribution: slugslayer
Location: Namibia/Khomas, Region/Windhoek-Land, Kreis/Aris/Aris-Steinbrüche (Ariskop Quarry; Railway Quarry)
Mineral: Makatite
Image: 1247687266
Rating: 6 (votes: 3)
License: Usage for Mineralienatlas project only
Makatit

Bildbreite: 12 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia
Copyright: Joachim Esche
Contribution: slugslayer 2009-07-15
Locality: Aris-Steinbrüche (Ariskop Quarry; Railway Quarry) / Aris / Windhoek-Land, Kreis / Khomas, Region / Namibia

You find additional Makatit specimen at the Geolitho Museum

Collectors Summary

Color farblos, weiß
Streak color weiß
Solubility +++ Säuren, - H2O
Crystal System monoklin, P21/c

Chemism

Chemical formula

Na2Si4O8(OH)2·4H2O

Chemical composition

Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 392.3931504 u; Number of atoms in the formula: 30

Info

Empirical formula:

Na2Si4O8(OH)2·4H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

2.57

10

33.33

1.0079470

10.0794700
Oxygen

O

57.08

14

46.67

15.9994300

223.9920200
Sodium

Na

11.72

2

6.67

22.9897702

45.9795404
Silicon

Si

28.63

4

13.33

28.0855300

112.3421200

Analysis wt%

SiO2 : 61.04, Na2O : 14.76, H2O : 20.83 (Ref: American Mineralogist 70)

Strunz 9th edition incl. updates

9.EE.45

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
E: Einfache tetrahedrale Netze aus sechsfach-Ringen, verbunden über octahedrale Netze oder Bänder
45:Makatit-Gruppe

Lapis Classification

VIII/G.05-020

VIII: SILIKATE
G: Übergangsstrukturen zwischen Ketten- und Schichtsilikaten

Classification by Hölzel

9.EA.460

9: SILICATES
E: Phyllosilicates
A: tetragonal & pseudotetragonal Phyllosilicates
4: Natrosilite-Group

Dana 8th edition

74.03.05.02

74: Phyllosilicates Phyllosilicate Modulated Layers
03: Phyllosilicates Phyllosilicate Modulated Layers with joined strips
05: Na phyllosilicates

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, weiß

Streak color

weiß

Diaphaneity (Transparency)

durchscheinend

RI value α / ω / n

1.472

RI value β

min

RI value γ / ε

1.487

2V angle

Biaxial

Optical Data Luminescence

Color LW-UV (365nm)

  

gelblich weiß

LW-UV Intensity

schwach

Color SW-UV (254nm)

  

grünlich

SW-UV Intensity

stark

SW-UV Other Colors

    

bläulich weiß, gelblich weiß

Afterglow (Persistant Luminescence)

keine Daten

Image ⇒ Luminescence ⇒ excitation ⇒ UV longwave ~365nm (3 Images total)

Makatit - Detail
Views (File:
1652383109
): 56
Makatit - Detail
Unter UV-Anregung (365nm) leuchtet Makatit hellblau. Mit im Bild sind Villiaumit (rot) und Natrolith (gelb). (BB 3.3 mm, Aris-Steinbrüche, Windhoek-Land, Khomas, Namibia).
Copyright: Lynx; Contribution: Lynx
Collection: Lynx
Location: Namibia/Khomas, Region/Windhoek-Land, Kreis/Aris/Aris-Steinbrüche (Ariskop Quarry; Railway Quarry)
Mineral: Makatite
Image: 1652383109
License: Usage for Mineralienatlas project only
Makatit - Detail

Unter UV-Anregung (365nm) leuchtet Makatit hellblau. Mit im Bild sind Villiaumit (rot) und Natrolith (gelb). (BB 3.3 mm, Aris-Steinbrüche, Windhoek-Land, Khomas, Namibia).
Collection: Lynx
Copyright: Lynx
Contribution: Lynx 2022-05-12
Locality: Aris-Steinbrüche (Ariskop Quarry; Railway Quarry) / Aris / Windhoek-Land, Kreis / Khomas, Region / Namibia
Makatit unter UV
Views (File:
1590860277
): 320
Makatit unter UV
Makatit (weiß/bläulich, haarig) mit Fluorit (als kugelige Aggregate, gelb?) auf klaren Krsitallen (Natrolith?, durch Fluorit? gelblich erscheinend), Beleuchtung mit UV (LW 365 nm). BB 1.6 mm, Aris-Steinbrüche, Windhoek-Land, Khomas, Namibia.
Copyright: Lynx; Contribution: Lynx
Collection: Lynx
Location: Namibia/Khomas, Region/Windhoek-Land, Kreis/Aris/Aris-Steinbrüche (Ariskop Quarry; Railway Quarry)
Mineral: Makatite
Image: 1590860277
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Makatit unter UV

Makatit (weiß/bläulich, haarig) mit Fluorit (als kugelige Aggregate, gelb?) auf klaren Krsitallen (Natrolith?, durch Fluorit? gelblich erscheinend), Beleuchtung mit UV (LW 365 nm). BB 1.6 mm, Aris-...
Collection: Lynx
Copyright: Lynx
Contribution: Lynx 2020-05-30
Locality: Aris-Steinbrüche (Ariskop Quarry; Railway Quarry) / Aris / Windhoek-Land, Kreis / Khomas, Region / Namibia
Druse im Phonolith unter UV
Views (File:
1590860190
): 235
Druse im Phonolith unter UV
Druse im Phonolith mit Villiaumit (rot), Makatit (weiß/bläulich, haarig), Fluorit (als kugelige Aggregate, gelb?) und klaren Krsitallen (Natrolith?, durch Fluorit? gelblich erscheinend), Beleuchtung mit UV (LW 365 nm, gefiltert). BB 6.3 mm, Aris-Steinbrüche, Windhoek-Land, Khomas, Namibia.
Copyright: Lynx; Contribution: Lynx
Collection: Lynx
Location: Namibia/Khomas, Region/Windhoek-Land, Kreis/Aris/Aris-Steinbrüche (Ariskop Quarry; Railway Quarry)
Mineral: Makatite
Image: 1590860190
License: Usage for Mineralienatlas project only
Druse im Phonolith unter UV

Druse im Phonolith mit Villiaumit (rot), Makatit (weiß/bläulich, haarig), Fluorit (als kugelige Aggregate, gelb?) und klaren Krsitallen (Natrolith?, durch Fluorit? gelblich erscheinend), Beleuchtun...
Collection: Lynx
Copyright: Lynx
Contribution: Lynx 2020-05-30
Locality: Aris-Steinbrüche (Ariskop Quarry; Railway Quarry) / Aris / Windhoek-Land, Kreis / Khomas, Region / Namibia

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

7.388

Cell parameters b (Å)

18.094

Cell parameters c (Å)

9.523

Cell parameters a/b or c/a

0.408

Cell parameters c/b

0.526

Cell parameters α

90°

Cell parameters β

90.63

Cell parameters γ

90°

Z

4

Volumne (ų)

1272.943

X-Ray Powder Diffraction

9.05(80),
8.43(40),
5.095(100),
3.737(20),
3.694(70),
3.420(60),
3.126(30),
2.995(40)
XRD chart Makatite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

2.072

2.047 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, - H2O

(Co-)Type locality

(Co-)Type locality

Kenia/Kajiado County/South Rift Valley/Lake Magadi

Preface

Author (Name, Year)

Sheppard & Gude & Hay, 1970

References

American Mineralogist 55 (1970), 358

Other languages

German

Makatit

Spanish

Makatita

English

Makatite

French

Makatite

Russian

Макатит

Alternative Name

Unnamed (MSH UK-66)

CNMNC (IMA)-Number

IMA 1969-003

CNMNC symbol

Symbol

Mkt

Locations with GPS information