Results 71 to 80 of about 17,442 (241)

Appraisal of Six Natural Mica Reference Materials for In Situ Rb‐Sr Geochronology

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points Evaluated six natural mica reference materials for in situ LA‐ICP‐MS/MS Rb‐Sr geochronology using geochemical, microstructural and isotopic characterisation. Identified robust primary reference materials: Mount Dromedary biotite (99.37 Ma) and Mica‐Fe biotite (307.75 Ma). La Posta biotite and Högsbo muscovite are suitable secondary reference
Hugo K.H. Olierook   +38 more
wiley   +1 more source

Harding Pegmatite mine - rose muscovite

open access: yes, 1996
Rose muscovite crystal from ...
Zerendow, Chris
core  

P‐T Uncertainty in Subsolidus Metamorphic Systems: Sources, Patterns and Controls

open access: yesJournal of Metamorphic Geology, EarlyView.
ABSTRACT Phase equilibrium modelling of metamorphic rocks is subject to multiple, superimposed sources of uncertainty that affect pressure–temperature (P$$ P $$‐T$$ T $$) estimates, making it difficult to independently distinguish and evaluate the contribution of each source.
I. P. Cawood, T. Mackay‐Champion
wiley   +1 more source

Chromium-containing muscovite: crystal chemistry and XANES spectroscopy

open access: yes, 2001
To verify chromium enrichment of the muscovite layer, a crystal chemical and XANES study on chromium-containing muscovite crystals from the South Island of New Zealand was carried out.
Giannantonio Cibin   +6 more
core   +1 more source

Feldspar Albitization With Implications for Reservoir Quality Evolution of Eocene Turbidite Sandstones in Offshore Espírito Santo Basin, Eastern Brazil

open access: yesJournal of Petroleum Geology, EarlyView.
ABSTRACT The diagenetic albitization of plagioclase and K‐feldspar grains is a transformative process that significantly alters sandstone's detrital composition and formation water chemistry, impacting reservoir quality. In this study, Eocene turbidite sandstones from the offshore Espírito Santo Basin, Brazil, were investigated to elucidate the role of
Eveline E. Zambonato   +2 more
wiley   +1 more source

Muscovite pseudomorphs after staurolite as a record of fluid infiltration during prograde metamorphism [PDF]

open access: yes, 2006
Pressure-temperature conditions encountered by metamorphic rocks are often used to constrain tectonic environments of formation. Evidence of the prograde path during metamorphism is often obliterated by peak metamorphic conditions.
Whittington, Jennifer Kaye   +2 more
core   +1 more source

Consistency and Rheological Properties of Cemented Paste Backfills Prepared with Tailings with Varying Free Muscovite Content

open access: yesMining
The presence of free muscovite in tailings can negatively affect the mechanical strength and rheological properties of cemented paste backfill, as has been observed for several cementitious materials. The aim of this study is to evaluate the influence of
Hadj Ghani Menasria   +3 more
doaj   +1 more source

The (trans)national Russian religious imagination in exile: Iulia de Beausobre (1893‐1977)

open access: yesModern Theology, EarlyView.
Abstract The article offers a case study of how Russian Orthodox who migrated from the Soviet Union after the Bolshevik Revolution of 1917 reimagined their religious identity and their church in a transnational setting. Iulia de Beausobre (1893‐1977) was a Russian aristocrat who fell victim to the Stalinist purges but survived the Soviet prison system ...
Ruth Coates
wiley   +1 more source

Muscovite in pegmatite

open access: yes, 2019
Light reflects from cleavage surface of muscovite flake just above the pencil point in pegmatite. Another muscovite book is to the left. This is a close-up of photo HNB_1818.JPG Project Name: Bald Mountain, Camdenhttps://digitalmaine.com ...
Berry, Henry N, IV
core  

Home - About - Disclaimer - Privacy