In geology pictures of rocks can be used to help you best determine which of the three major types a particular rock belongs to.
Rocks with purple crystal inside.
Ask to speak to the high school science teacher.
8 years and up.
Break open a gigantic geode this large rock has amazing crystals inside.
Look at the crystal using a magnifying lens.
Pegmatites composed primarily of large crystals such as granite.
By comparing your rock sample with photographic examples you can identify key characteristics such as how the rock was formed what minerals and other materials it contains and where the rock may have come from.
The colors come from the different minerals that flowed through the bubble so many millions of years ago.
Although fairly rare you can find purple blue or violet minerals in these four types of rocks ordered from most to least common.
Igneous sedimentary or metamorphic.
All geodes are not created equal the first one is quite hollow but for a nice layer of medium sized blue crystals.
Also search for rock crystal or rock and crystal identification websites.
4 3 out of 5 stars 579.
Purple rocks which may range in hue from blue to violet get their color from the minerals those rocks contain.
Most geodes contain clear quartz crystals while others have purple amethyst crystals.
Sunyik natural amethyst quartz crystal cluster druzy geode specimen gemstone sculpture sphere 0 2 0 3lb.
Quartz is the most common mineral in the earth s crust.
Purple crystals tumbled when you look at purple crystals in tumbled form you cannot help but be reminded of the sky s tones of blue and violet during winter.
The blue crystals attract attention and make llanite an interesting lapidary material.
Still others can have agate chalcedony or jasper banding or crystals such as calcite dolomite celestite etc.
Show the science teacher the stone and ask for their opinion.
Compare it to the pictures of crystals on the internet.
Rich purple amethyst perfect white calcite crystals.
Get it as soon as fri oct 9.
These dugway geodes have bands of blue and pink.
But they were filled with rock crystal instead of amethyst.
Purple crystals are naturally the birthstones of people born in the new year or just after the winter solstice which is anywhere between the last week of december until the end of january.
Its rock name is rhyolite porphyry.
Llanite is a rock found in texas and a few other locations that contains tiny euhedral well formed crystals of blue quartz in a groundmass of pink and brown feldspar.
An example is quartz silicon dioxide sio 2.
Take the washed rock to the local school system.
However as these.
There is no easy way of telling what the inside of a geode holds until it is cut open or broken apart.
Minerals are classified based on characteristics such as hardness and crystal shape e g hexagonal cubic.
But sometimes there are other interesting landscapes inside.
The geode at the left and the one at the top of the page are both dugways from utah.
