05-06. Dolomite #7.
From a Drits, McCarty, Sakharov and Milliken resource: dolomite from Lea County, New Mexico.
How strange it is – I spent 2 days trying to find a color scheme that could fit the design and/or make it more dynamic. This morning, I checked the origin of the mineral: Lea County New Mexico – a tiny piece of desert land and dust lost in the middle of the South East part of the State, just next to Texas.
Last January, Exxon just spent $ 5.6 billions on drilling rights in that County. Not a great cause to celebrate I guess – if you’re a mineral! No wonder I couldn’t find any cheerful color in this dolomite. The coincidence is so bizarre, I felt like a real photograph from the Albuquerque journal is the least I could do to go along with this post.
05-05. Dolomite #6.
Same dolomite structure than yesterday – different perspective.
A very busy arrangement, indeed. I wonder what this panel would look like if I was replacing each sphere by a set of LED light bulbs of a different color and blinking at a different interval? Beyond the scope of this project for now, but intriguing challenge all the same!
05-04. Dolomite #5.
Dolomite formation. From a resource by Reeder and Markgraf.
05-03. Dolomite #4.
Industrial size dolomite close-up – or maybe a mechanical work “a la Fernand Leger”? The dolomite unit cell has a sturdy structure that would work well for a skyscraper.
From a resource by Reeder and Markgraf: high-temperature crystal chemistry of dolomite.
05-02. Dolomite #3.
Front view of the atom distribution in a dolomite unit cell.
From a resource by Reeder, Wenk.
05-01. Dolomite #2.
From a resource by Reeder and Wenk. The file title says – “structure refinements of some thermally disordered dolomites” I think they did a splendid job. This polyhedra triangle flight formation looks ready to take off!
04-30. Dolomite #1.
A strange flower coming down from the Italian Alps? Not quite – the mineral dolomite is named after Frenchman and mineralogist Deodat de Dolomieu in the mid-1700s.
Dolomite is the mineral for week #18 of the 52-week tour of the geometry of Nature. It is usually found in clusters of small rhombohedral crystals – small parallelepiped where all edges are the same length – and has a somewhat “saddle”-like shape. Its color varies from white to tan to pink. It’s part of the trigonal system family.
Dolomite is not often encountered as a gem. It is generally known as an inclusion in emerald, garnet, quartz, and ruby. A fascinating article by Luo, Yang and Shen describes its possible association with nephrite and how it was used in ancient Chinese culture. A major source of magnesium, it is found today in pharmaceutical applications and agricultural products.
From a resource by Steinfink & Sans: refinement of the crystal structure of dolomite.