FaithfullJohn, 3 months ago to Geology

#ThinSectionThursday Nice cross-twinned plagioclase crystals in this Palaeogene basalt from Allt na Coille Mor, near Ben More, on Mull. Plane polarized light, crossed polars, and sensitive tint illumination. Field of view 2mm wide. #Geology #Feldspar #Basalt #Microscopy #Rocks

A microscope view of a thin slice of rock, showing large black grey and white striped crystals with a saltire-cross form occupying much of the view. Between the "arms " of the cross, the rock is made up of smaller grey, white, brown, and black crystals
A microscope view of a thin slice of rock, showing large blue, purple and yellow striped crystals with a saltire-cross form occupying much of the view. Between the "arms " of the cross, the rock is made up of smaller purple, blue, yellow and black crystals

Ericsworld, 4 months ago to science

How #Feldspar Dust Makes #Clouds: New Study Reveals Nucleation

Scientists have discovered the secret behind one of the most effective cloud-makers in the atmosphere: feldspar.

Feldspar is a common mineral that makes up about half of the Earth’s crust and is also found on other planets. It has a special property that allows it to create ice crystals from water vapor very quickly and easily, which is essential for cloud formation.

Full Info: https://www.fdaytalk.com/how-feldspar-dust-makes-clouds-new-study-reveals-nucleation/

#science #climatechange

dlw, 8 months ago to random

#topaz is enshrined in the Mohs scale, between #quartz and #corundum. Modern methods of hardness testing have confirmed its intermediate position between quartz and corundum but it has a lower fracture toughness than quartz, similar to #feldspar.

Cormac_McGinley, 10 months ago to Geology

A Colourful Granitic shoreworn pebble with a particularly large feldspar crystal. County Clare, Ireland.

Cormacscoast.com Walking tours

#wildatlanticway #walkingtours #discoverireland #geology #burrenandcliffsofmohergeopark #atlanticgeoparks #Granite #feldspar #Ireland

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