09-21

09-21 Titanite #5.

A crystal of titanite from Khibina, Russia.

From a resource by Liferovich & Mitchell

09-21

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09-20

09-20, Titanite #4.

Wandering through a titanite crystal. The polyhedral vertices of its structure create a very futurist landscape.

From a resource by Hawthorne & Co.

09-20

 

09-18

09-18 Titanite #2.

From a crystal found in Maevatanana, Madagascar.

I’ve never found so many people associated with one single resource , but I’m going to credit them all anyway, they deserve it somehow: Hawthorne F C, Groat L. A, Raudsepp M, Ball N A, Kimata M, Spike F D, Gaba R, Halden N M, Lumpkin G. R, Ewing R C, Greegor R B, Lytle F W, Ercit T S, Rossman G. R, Wicks F J, Ramik R A, Sherriff B L, Fleet M E, McCammon C. A.

09-18

09-17

09-17. Titanite #1.

Titanite – Sphene for gemologists has been known since the late 1700s and can be found on all continents. It will be the mineral of week 38 of this short tour of the geometry of Nature.

Titanite was renamed “sphene” by a French mineralogist in the 1800s. Maybe its cognac or chartreuse yellowish green color had something to do with it – the story doesn’t say. Renamed titanite again in 1982, both names are still in use.

Titanite is a small monoclinic crystal of symmetry P2 and of medium hardness. The industry uses it in pigments while gemologists praise its exceptional dispersive power.

This is how the Hollabaugh and Foita resource from the Grisons, Switzerland, appears in the VESTA modeling program – quite an imposing crystal!

09-17

09-16

09-16 Chiolite #7.

What an intriguing and inspirational little mineral! All I could do was to go back to this perfect octahedron hiding in the midst of a cluster of atoms. Maybe it’ll take another few 1000 years, but this mineral is on its way to producing a beautiful crystal someday09-16!

09-15

09-15 – Chiolite #6.

This mineral’s geometry is so unusual and complex in graphic terms, I decided to go and visit the place where chiolite was first identified. The background is a Google Earth street view of the Ilmen mountains, a mineralogical reserve near the town of Miass, in southern Russia. This view was taken from one of the frozen lakes nearby at 3:34 am. 55°00’50.15″ N  60°10’24.67″ E

The octahedron that constitutes the core of the crystal fits well against the starry sky. So does Orion in the background – a good reminder of the chiolite challenging geometry.

09-15