Quartz diorite
Diorite comes from the Greek word diorizein which means to distinguish. Here at the location, you will find a nice mix of minerals that arise when we are dealing with a diorite. A bright type of rock that can give a nice shine in sunlight with reflections. Here you will have to study the mineral structure and immerse yourself in its composition in the form of the text below and the stone outside. Enjoy
Diorite comes in different types.
Diorite, coarse-grained deep rock consisting mainly of plagioclase and hornblende, possibly with biotite or pyroxene. Monzodiorite also contains some alkali feldspar, quartz diorite has larger amounts of quartz and granodiorite has both quartz and alkali feldspar.
The name is because the characteristic mineral hornblende is usually seen in the rock, which is therefore easy to recognize.
The white granite is not a granite, but a diorite, or more correctly a quartz diorite. It contains a lot of quartz (SiO2), very much to be a diorite. The white colour comes from the fact that the diorite contains almost no biotite.
It goes by the trade names white granite or light granite, but also trondheimite, and is found near Trondheim in Norway.
Diorite, coarse-grained deep rock consisting mainly of plagioclase and hornblende, possibly with biotite or pyroxene.
Monzodiorite also contains some alkali feldspar, quartz diorite has larger amounts of quartz and granodiorite has both quartz and alkali feldspar (see igneous rocks).
Dioritic rocks are characteristic of mountain ranges (in the geological sense of the word). They are usually white or grey, most have an even-grained (eugranitic) structure, but some are **porphyritic with scattered grains of plagioclase, hornblende or biotite. The lava rock that corresponds to diorite in composition is called andesite.
** Porphyritic is an adjective used in geology to describe igneous rocks with a distinct difference in the size of mineral crystals, with the larger crystals known as phenocrysts. Both extrusive and intrusive rocks can be porphyritic, meaning all types of igneous rocks can display some degree of porphyritic texture.
Facts
Type: Igneous rock
Colour: Light (grey to white)
Texture: Coarse-grained, crystalline
Structure: Solid (structureless)
Minerals: Feldspar, quartz, hornblende, mica
Formation: Slow solidification of melt at great depth
To log this cache.
To get to log this cache you will have to visit and answer the questions which are related to the coordinates given the earthcache.
When answers are collected, send them to CO for verification.
You can log immediately after answers are sent CO. If there are any questions about your answers CO will contact you.
Logs without answers to CO or with pending questions from CO will be deleted without any further notice.
Please do not include pictures in your log that may answer the questions.
Questions
1. Answer the questions under by visiting the Coordinates.
A. Study the rock at the location, what characteristic features can you see, and what colour(s) dominate?
B. Now you are going to study the crystals in the diorite stone, what size are they, and is the stone here fine, medium or coarse grained?
C. What percentage would you say the light part of the stone makes up, and what mineral is it.
2. Take a photo of you, the group or the GPS from the location without revealing any of the answers.
