Authigenic sphene in sandstones of the Brottum formation (Norway) and the Dala sandstone (Sweden).

A. A. Aldahan, S. Morad

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Authigenic sphene in these two sandstones occurs commonly as cement, often on altered detrital biotites; it may develop prismatic or sphenoidal forms. SEM photographs and microprobe analyses are presented and relatively high Al (Al2O3 2.04-4.82%), and smaller Fe (Fe2O3 0.08-1.39%) and Mg (MgO 0.04-0.28%) contents reported. The sphenes show etched surfaces and are associated with leucoxene when they occur in calcite cement, but those that occur in quartz cement have smooth faces and better crystal morphology. Compared with the sphene in low-grade metamorphic rocks and in some igneous rocks, it has a specific chemical composition. -R.A.H.

Original languageEnglish
Pages (from-to)135-144
Number of pages10
JournalNeues Jahrbuch fur Mineralogie, Monatshefte
Publication statusPublished - 1986
Externally publishedYes

ASJC Scopus subject areas

  • Geochemistry and Petrology

Fingerprint

Dive into the research topics of 'Authigenic sphene in sandstones of the Brottum formation (Norway) and the Dala sandstone (Sweden).'. Together they form a unique fingerprint.

Cite this