Mineral composition and gemological characteristics of the petrified wood of the Ulyanovsk region

Известия высших учебных заведений: Геология и разведка

D. A. Petrochenkov¹ 

[1]Russian State Geological Prospecting University

关键词: jewelry and ornamental raw materials;    petrified wood;    calcite;    lower cretaceous deposits;    ulyanovsk region;   

DOI  :  10.32454/0016-7762-2018-6-18-40

来源: DOAJ

【 摘 要 】

For the first time, the mineral composition and gemological characteristics of the petrified wood from the Ulyanovsk region, of jewelry and ornamental quality, have been studied. The petrified wood is associated with the Lower Cretaceous deposits and consists mainly of calcite (up to 73 mass. %); pyrite, apatite, gypsum are present; dolomite, anhydrite, hematite, pyrolusite, organic matter and X-ray amorphous substance have been fixed. According to the technological and decorative characteristics, the petrified wood of the Ulyanovsk region is a quality jewelry and ornamental material of the florogenic group.

【 授权许可】

Unknown