The Heart of a Stone
Bernardo Cesare
Department of Geosciences, University of Padova, Padova, Italy
Heart-shaped glomerocryst (aggregate of phenocrysts) made of plagioclase and pyroxene in a cordierite-bearing dacitic lava from Lipari (Eolie islands).
I study the crustal xenoliths of these lavas to understand the processes accompanying high-temperature metamorphism and crustal melting.
But I came across this spectacular glomerocryst and couldn't help but take a picture!
Polarized light photomicrograph.
Crossed polarizers plus red tint plate. Width c. 5 mm.
Location
Reuse
Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0) (opens in a new window)Credit: Bernardo Cesare (distributed via imaggeo.egu.eu)
Properties
Type
Image
Format
JPG
Size
1.7 MB
Width
2500 px
Height
1667 px
Aspect
2500:1667
Brand
Nikon
Model
D5500
Exposure
1/80 s ISO 100
Taken
30 January 2019
Tint
Dark grayish olive green
Submitted
14 February 2019
Comments
No comments yet. Be the first to share your thoughts.