LIU Xiao-wen, LIU Xiao-xu

(School of Resources Processing and Bioengineering, Central South University, Changsha 410083, China)

Abstract: Based on X-ray fluorescence spectrum testing, X-ray diffraction and UV-Vis detection, composition and structure of inkstone from Gong River, Western Hubei Province, China were analysed and the ink storage experiment was conducted to characterize its performance. Feasibility of inkstone exploitation was also discussed. The result showed that the inkstone was mainly made from dolomite, calcite, hydromica and quartz. The visible spectrum absorption peaks are at about 378 nm, 437 nm and 540 nm, for the transition of Fe³⁺ from ⁶A_1g ground state to ⁴A_1g state or ⁴E_g state, electronic transition absorption of Fe³⁺ in oxygen octahedral and spin forbidden band transition of Fe²⁺ in oxygen octahedral, respectively. Optical microscope results showed that minerals were arranged compactly and the porosity was less than 0.01 mm. The density of the inkstone peaks varied from 0.6 to 0.7 peak/μm² and the inkstone belonged to the middle-peak- density one. The ink storage capacity varied from 1.3 to 60 h under different conditions. Therefore, these study provided scientific evidences for exploitation on inkstone from Western Hubei Province, China.

Key words: inkstone; phase analysis; absorption spectrum; ink storage

ACTA MINERALOGICA SINICA Vol. 34, No. 2, 2014, Page 171-174