Melanophlogite

Fortullino, Rosignano Marittimo, Livorno Province, Tuscany, Italy
© Elmar Lackner

Show Melanophlogite Photos (52)

Formula:

46SiO

·6(N

,CO

)·2(CH

)

System:

Tetragonal

Colour:

Colorless, white, ...

Hardness:

6½ - 7

This page provides mineralogical data about Melanophlogite.

Classification of Melanophlogite

IMA status:

Approved

Strunz 8th edition ID:

4/D.01-40

Nickel-Strunz 10th (pending) edition ID:

4.DA.25

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
A : With small cations: Silica family

Dana 8th edition ID:

75.2.2.1

75 : TECTOSILICATES Si Tetrahedral Frameworks
2 : Si Tetrahedral Frameworks - SiO₂ with H₂O and organics

mindat.org URL:

http://www.mindat.org/min-2630.html
Please feel free to link to this page.

Type Occurrence of Melanophlogite

Type Locality:

Giona Mine, Milena, Caltanissetta Province, Sicily, Italy

Year of Discovery:

1876

Physical Properties of Melanophlogite

Lustre:

Vitreous

Colour:

Colorless, white, water-clear (pale yellow to deep red brown with impurities)

Streak:

White

Hardness (Mohs):

6½ - 7

Crystallography of Melanophlogite

Crystal System:

Tetragonal

Cell Parameters:

a = 26.82Å, c = 13.37Å

Ratio:

a:c = 1 : 0.499

Unit Cell Volume:

V 9,617.21 Å³ (Calculated from Unit Cell)

Crystal Atlas:

Image Loading

Click on an icon to view

Melanophlogite no.2 - Goldschmidt (1913-1926)

About Crystal Atlas

You may need to scroll this box using your mouse to view the full instructions.

The mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. You need Java to see these. You can download Java for free - click here to download Java

The 3d models and java code are kindly provided by www.smorf.nl. You can control the movement of the models by holding down the left mouse-button over the 3d model and moving your mouse. Keyboard controls are:

: default positions

t/T	: decrease/increase transparency	x/X	: next/previous texture
b/B	: next/previous background	w	: toggle wireframe
s	: toggle sticks	m	: toggle miller indices
k	: toggle crystallographic axes	=/-	: zoom in/out
r	: stop/start rotation	1/2/3

Chemical Properties of Melanophlogite

Formula:

46SiO

·6(N

,CO

)·2(CH

)

Essential elements:

C, H, N, O, Si

All elements listed in formula:

C, H, N, O, Si

Common Impurities:

ORG,C,H,S

Relationship of Melanophlogite to other Species

4.DA.05

Quartz

SiO

4.DA.10

Opal

SiO

·nH

4.DA.10

Tridymite

SiO

4.DA.15

Cristobalite

SiO

4.DA.20

Mogánite

SiO

4.DA.30

Lechatelierite

SiO

4.DA.35

Coesite

SiO

4.DA.40

Stishovite

SiO

4.DA.45

Keatite

4.DA.50

Seifertite

SiO

Other Names for Melanophlogite

Other Languages:

German:	Melanophlogit
Russian:	Меланофлогит
Spanish:	Melanophlogita

Other Information

Health Warning:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Melanophlogite

Reference List:

American Mineralogist (1963): 48: 854-867.

American Mineralogist (1972): 57: 779-796.

Zeitschrift für Kristallographie (1983): 164: 247-257.

Mineralogical Record (2002): 33: 237-242.

Adorni, F., Tadeo, F., Adorni, B. 2004): La melanoflogite di Case Montanini. Rivista Mineralogica Italiana, 3/2004, 126-136.

Tribaudino, M., Artoni, A., Mavris, Ch., Bersani, D., Lottici, P.P., Belletti, D. (2008): Single-crystal X-ray and Raman investigation on melanophlogite from Varano Marchesi (Parma, Italy). American Mineralogist, 93, 88-94.