stilpnomelane
stilpnomelane A phyllosilicate (sheet silicate) similar to biotite with the formula (K,Na,Ca)0–1.4(Fe2+,Fe3+,Mg,Al,Mn)5.9–8.2 [Si8O20](OH)4(OH,F)3.6–8.5; sp. gr. 2.59–2.96; hardness 3.0–4.0; properties similar to those of biotite; found in metamorphosed iron- and manganese-rich sedimentary deposits and in some glaucophane schists.
More From encyclopedia.com
puszta , puszta Hungarian grassland, similar to the North American prairie.
puszta Hungarian grassland, similar to the N. American prairie. Hornblende , Hornblende
hornblende An important rock-forming silicate mineral and member of the amphiboles, particularly the calcium-rich monoclinic amphiboles; i… Similarity Coefficient , similarity coefficient Any measure of the similarity of two samples. In ecological work the similarity index devised in 1920 by H. A.Gleason has been… Al-kashi , Al-Kāsh
Al-Kāshī (or Al-Kāshānī), Ghiyāth Al-Dīn Jamshīd Mas’ūd
(b. Kāshān, Iran; d. Samarkand [now in Uzbek, U.S.S.R], 22 June 1429)
astronomy, math… Analogous Variation , analogous variation Those features with similar functions which have developed independently in unrelated taxonomic groups, in response to a similar… Ornamental Ironwork , ironwork, ornamental
ornamental ironwork: The shaping of wrought iron, used almost exclusively until the 16th cent., is primarily an art of the black…
You Might Also Like
NEARBY TERMS
stilpnomelane