Thames & Kosmos Kids First: Crystals, Rocks & Minerals handleiding

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Handleiding

WHAT’S HAPPENING

The color of a mineral is the first

valuable indication of its identity. One

of the minerals contained in your kit is

yellowish, another may have a dark-

gray or a greenish blue sparkle. In

reality, though, the color is only a poor

indicator: many minerals get their

colors from the presence of very small

amounts of other materials, so the

same mineral can actually show up in

many different colors. A well-known

example is the mineral quartz: a plain

quartz crystal is colorless and rose

quartz is pink. When it is light brown,

it’s called smoky quartz, and when it

is purple, it’s called amethyst. Your

fluorite can be violet or light green.

So, much more important than the

color, which can be influenced by

incidental impurities, is the streak

color of a mineral.

Basalt

Quartz Crystal

Pumice

Bornite

Calcite

Fluorite

Granite

Hematite

Limestone

Magnetite

Marble

Pyrite

Soapstone

Minerals in the Research Lab

Organizing your

collection!

YOU WILL NEED

› Name cards from the die-cut sheet

› Rock and mineral specimens

› Box with small compartments or sheet of

paper and marker

HERE’S HOW

1. Remove the name cards from the die-cut

sheet.

2. Find a box with at least 13 small

compartments, like a jewelry storage box.

Or you can simply use a sheet of paper with

13 squares drawn on it. Arrange your rock

and mineral samples with their name cards

in the small compartments or squares on

the paper. The photos below will help you

match the specimen with its name.

TIP !

If you aren’t sure which specimen is

which, the tests on the following

pages will help you find out.

ABOUT

PYRITE

Hardness Density

6 5

This yellow, shiny

metallic mineral is a

compound of iron

and sulfur, and often

appears in the form

of pretty cubes. It

has often been

confused with gold,

hence the common

name “fool’s gold.” It

is useful in small

quantities in the

chemical industry as

a raw material in the

production of sulfur.

Minerals in the Research Lab

EXPERIMENT 9

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