They find a new mineral in prehistoric painting

They find a new mineral in prehistoric painting

We are searching data for your request:

Forums and discussions:
Manuals and reference books:
Data from registers:
Wait the end of the search in all databases.
Upon completion, a link will appear to access the found materials.

A group of researchers from the UNED has discovered that the bluish color of a painting from the Remacha Coat, in the Hoces del Río Duratón (Segovia), contained a mineral that was not used for pictorial purposes in prehistory: the paracoquimbita.

Precisely in Las Hoces del Río Duratón there are more than thirty rocky shelters that prehistoric settlers used as murals in which to capture their paintings. The Rivet Coat is one of them with more than 180 small images representing human figures, animals and abstract symbols.

UNED researchers have analyzed six micro-samples of the paintings and they have discovered paracoquimbite, a mineral that had never been used as a component of the prehistoric palette.

Although at the moment its origin is unknown, It is not ruled out that it could have been transferred from another site by humans to use it as paint. It seems unlikely that the mineral was created there, as the necessary chemical conditions do not exist in the coat, nor have traces of paracoquimbite been found in the red samples

We found a bluish pigment containing amorphous carbon and a nonahydrated iron sulfate, called paracoquimbite.”, Explained Mercedes Iriarte, researcher at the Department of Physicochemical Sciences and Techniques of the UNED and main author of the study. "This pulverized mineral had not been detected until now as part of the pictorial recipe in cave painting”.

The tiny size of components, with grains less than one micron, shows that prehistoric artists used very elaborate techniques, working the mineral hard until they achieved a fine powder.

The finer the pigment powder, the more coating ability it has”, Points out Antonio Hernanz, researcher from the Department of Physicochemical Sciences and Techniques of the UNED and another of the authors of the study.

Besides the paracoquimbita, Other common components such as carbonates, quartz, gypsum and calcium oxalates were also found. The oxalates will allow to date the paints since they contain carbon in their molecule.

Analysis of the samples also indicates the level of degradation of the paints, mainly due to crystallization of the plaster.

Madrilenian or Cantabrian. Calculator or impulsive. Dreamy or realistic. 23 years or 12. Soccer or shops. Truthful journalism: You have to know the story in depth, it is the only way not to make the same mistakes of the past

Video: Siningkwela Episode 4 - How to recreate. make prehistoric paintings