Image from the Biodiversity Heritage Library.
Contributed by Harvard University Botany Libraries.
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Transcription
386
Peltootype
Which, in diameter, is 2.5cm X 3cm.
Of medium crystal size; darker than subgarnets;
While, retrofelsite; subgarnets are 2.0mm; while
minimum striae is 1.0mm; which has a very
highly developed texture in the lower part of the
section.
It contains two kinds of amphibole; one is
opaque, and the other is translucent.
The most common mineral is feldspar.
Stamps by roadside
Costa Rica: San Jose Province. Ramon Redondo S330-5330M.
Dodge & Thomas 4988