Austin Marling Block 6
Green Fluorite Chemical formula: Lustre: Cleavage: Colour: Streak Colour: Hardness:
Blue Fluorite from China
CaF2 non-metallic Yes; octahedral cleavage (usually) variations of purple colourless softer than glass, but harder than fingernail Moh’s Scale = 4 Special properties: fluorescence under UV light Uses: optics, high-end telescopes and lenses; source of fluoride used in toothpaste
Fluorite under UV light
Sources: -Wikipedia.com -Glencoe.com “Virtual Mineral Lab”
Chemical formula: Fe2O3 Lustre: Metallic Cleavage: Fracture, Their is no cleavage Colour: Dark red with gray and purple Streak Colour: Brown Hardness:Harder than finger nail Moh’s scale 2.5 Special properties: People believe hematite has special healing properties Uses: Used for mood rings and healing
Chemical formula:BaSO4 Lustre: Non Metallic Cleavage: Fracture Colour: White Streak Colour: White Hardness:Softer than a finger nail Moh’s scale 2.5 Special properties: Has high specific gravity Uses: Industrial, medical and manufacturing uses
Chemical formula: Lustre: Metallic Cleavage: Cleavage (2 faces) Colour: Grey-Black Streak Colour: colourless Hardness : Harder than scratch plate Moh’s scale 7 Special Properties: Contains quartz and mica Uses: Used for decorative purposes for your houses
Chemical formula: Mg3Si2O5(OH)4 Lustre: Metallic
Cleavage: Cleavage (3 faces) Colour: Green and black with white crystals Streak Colour: colourless Hardness : Harder than scratch plate Moh’s scale 7 Special properties: One of six naturally occurring silicate minerals Uses: Used for manufacturing and building
Chemical formula:KALSIi2O8 Lustre: Non Metallic Cleavage: Cleavage (2 faces) Colour: White
Streak Colour: colourless Hardness : Harder than scratch plate Moh’s scale 7 Special Properties: Only found in certain parts of the world Uses: Used to make, rubber, paint, plastic
Chemical formula: CaSo4 2H2O Lustre: Non Metallic
Cleavage: Fracture Colour: White and grey Streak Colour: colourless Hardness : Harder than scratch plate Moh’s scale 7
Special properties: Its Translucent Uses: Dry wall and plaster
Chemical formula: SiO2 Lustre: Non Metallic Cleavage: Fracture
Colour: White and clear Streak Colour: colourless
Hardness : Harder than glass plate Moh’s scale 5.5 Special Properties: Transparent and colourless Uses: Jewelry and glass
Chemical formula: FeS2 Lustre: Metallic
Cleavage: Cleavage (2 sides) Colour: Grey and Black
Streak Colour: Black Hardness : Hard as a glass plate Moh’s scale 5
Special Properties: Looks just like gold (fools gold) Uses: It used to be used in guns
Chemical formula: C Lustre: Non Metallic Cleavage: Fracture Colour: Black Streak Colour: Grey-Black Hardness : Harder than a penny Moh’s scale 4
Special Properties: Has unique chemical structure Uses: Used to make pencils
Chemical formula: CaCo3 Lustre: Non Metallic
Cleavage: Cleavage Colour: White
Streak Colour: White Hardness : Softer than glass Moh’s scale 5 Special properties: A lot of tubular and acute forms
Uses: High grade calcite was used for gun sights in world war 2
Chemical formula: PbS Lustre: Metallic Cleavage: Cleavage Colour: Grey Streak Colour: Black Hardness : Softer than finger nail Moh’s scale 2.2 Special properties: Contains significant amounts of silver Uses: Used in lead-acid batteries
Chemical formula: NaCl Lustre: Metallic
Cleavage: Cleavage Colour: Grey
Streak Colour: Black Hardness : Softer than finger nail Moh’s scale 2.2
Special properties: Created in sedimentary lakes Uses: Used to manage ice
Chemical formula: S Lustre: Non Metallic Cleavage: Fracture Colour: Yellow Streak Colour: Yellow Hardness : Softer than finger nail Moh’s scale 2.2
Special Properties: Smells similar to matches Uses: Used in biochemical processes in metabolic reactions
Chemical formula: Mg2Si4O10(OH)2 Lustre: Non Metallic Cleavage: Cleavage Colour: White or greenish Streak Colour: White Hardness : Softer than finger nail Moh’s scale 2.2
Special Properties: Perfect cleavage Uses: Used in making paper, rubber, electric cables
Wikapedia.ca Glencoe.com