Igneous Hand Samples

Igneous Rocks to be identified by hand sample

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

Texture

Grain Size:
Crystallinity:
General Texture:

Appearance:

Colour:
Felsic/Mafic:
Colour Index(%):

Mineralogy:

List of minerals:

                        Mineral                              Essential?                Percentage


Name of this Rock:

Crystallisation History:

These four samples are all the same type of rock, notice the colour variation and presence or absence of the feldspar phenocrysts.