Vaughn Kuemper Mineral Lab ppt

Mineral Identification lab

ByByVaughnVaughn

KuemperKuemper

GypsumChemical formula: CaSO4-2H2O Lustre: non-metallicCleavage: Perfect on {010}Colour: ColorlessStreak Colour: whiteHardness: Softer than a fingernail

Moh’s Scale = 1.5Special properties: TranslucentUses: drywall, plaster, fertilizer, and traditional Chinese medicine

Sources:-Wikipedia.com-Glencoe.com “Virtual Mineral Lab”

Golden Gypsum crystalsTranslucent Gypsum

BariteChemical formula: BaSO4

Lustre: non-metallicCleavage: Yes, perfect cleavage parallel to base, and prism facesColour: White, colorless, light shades of blue, yellow, grey, brownStreak Colour: WhiteHardness: Harder than a fingernail, softer than glass

Moh’s Scale = 3-3.5Special properties: The term “Primary Baryte” refers to the first marketable product.Uses: Drilling fluids in oil and gas exploration.


The Unit cell of BariteBarite

TalcChemical formula: Mg3Si4O10(OH)2

Lustre: non-metallicCleavage: Yes, Perfect on {001}Colour: White, brownStreak Colour: WhiteHardness: Softer than a fingernail

Moh’s Scale = 1Special properties: It’s an important ingredient for makeupUses: Paper making, plastic, paint, rubber, food, electric cable


Block of talcTalc

QuartzChemical formula: SiO2

Lustre: non-metallicCleavage: Yes, {0110} indistinctColour: ColorlessStreak Colour: WhiteHardness: Harder than glass

Moh’s Scale = 7Special properties: Essential constituent of graniteUses: jewelry, glass, stone tools


Crystal structure of QuartzQuartz

PyriteChemical formula: FeS2

Lustre: metallicCleavage: indistinct on {001}Colour: Pale brass-yellowStreak Colour: greenish blackHardness: Harder than glass

Moh’s Scale = 6-6.5Special properties: Enjoyed in the 16th and 17th century because of its use for ignition in firearmsUses: Mineral detector in radio recievers


Crystal structure of PyritePyrite

GraphiteChemical formula: CLustre: metallicCleavage: Yes, Bascal – perfect on {0001}Colour: Iron-black to steel-gray; deep blue in transmitted lightStreak Colour: Black to greyHardness: softer than a fingernail

Moh’s Scale = 1-2Special properties: Has a layered planar structureUses: Batteries, steelmaking, brake linings, and lubricants


Graphite's unit cellGraphite

Magnetite

Chemical formula: Fe2Fe32O4

Lustre: metallicCleavage: Yes, indistinct, parting on {III}, very goodColour: Black, gray with brownish tintStreak Colour: BlackHardness: Harder than glass

Moh’s Scale = 5.5-6.5Special properties: Magnetite carries the dominant magnetic signature in rocksUses: Magnets, abrasive materials, jewlry


Crystal structure of MagnetiteMagnetite

FeldsparChemical formula: KAISi3O8

Lustre: non-metallicCleavage: Yes, two or three planesColour: Pink, white, gray, brownStreak Colour: WhiteHardness: Harder than glass

Moh’s Scale =6-6.5Special properties: Mostly found in China, Italy, and TurkeyUses: Rubber, paint, plastic, glassmaking, tableware


Grey FeldsparFeldspar

Biotite Mica

Chemical formula: K(MgFE)3(AISi3O10)(FOG)2

Lustre: non-metallicCleavage: Yes, perfect on the {001}Colour: Dark brown, greenish brown, blackish-brown, yellowStreak Colour: WhiteHardness: soft as a fingernail

Moh’s Scale = 2.5-3.0Special properties: Biotite has a highly perfect bascal cleavageUses: Constrain ages of rocks, assessing temperature of metamorphic rock.


Biotite: Topotype depositBiotite Mica

Hematite

Chemical formula: Fe2O3

Lustre: metallicCleavage: noneColour: metallic grey, dull to bright redStreak Colour: Bright red to dark redHardness: Soft as a fingernail

Moh’s Scale = 5.5-6.5Special properties: Also referred to as the blood oreUses: Jewelry, gilding, pottery


Crystal structure of hematiteHematite

CalciteChemical formula: CaCO3Lustre: non metallicCleavage: Perfect on {1011}.Colour: White, transparentStreak Colour: WhiteHardness: Softer than glass but harder than fingernail

Moh’s Scale = 3Special properties: Calcite is best recognized by its high reactivity to weak acidsUses: World war 2 for gun scopes


Doubly terminated calcite crystalCalcite

FluoriteChemical formula: CaF2

Lustre: non-metallicCleavage: Yes; octahedral cleavageColour: (usually) variations of purpleStreak Colour: colourlessHardness: softer than glass, but harder than fingernail

Moh’s Scale = 4Special properties: fluorescence under UV lightUses: optics, high-end telescopes and lenses; source of fluoride used in toothpaste


Blue Fluorite from ChinaGreen Fluorite

GalenaChemical formula: PbSLustre: metallicCleavage: Cubic perfect on [001], parting on [111]Colour: Lead gray and silveryStreak Colour: Lead grayHardness: Soft as a fingernail

Moh’s Scale = 2.5-2.75Special properties: Galena deposits often contain significant amounts of silverUses: Kohl, lead acid batteries, wireless communication systems


Galena with druzy calciteGalena

HaliteChemical formula: NaClLustre: VitreousCleavage: Perfect {001}, three directions cubicColour: Colorless or whiteStreak Colour: WhiteHardness: Soft as a fingernail

Moh’s Scale = 2-2.5Special properties: Halite is found in beds of sedimentary evaporate mineralsUses: Managing ice, used in some food to enhance the flavor


Halite Cubes from the Stassfurt potash depositHalite

SulfurChemical formula: S8

Lustre: non metallicCleavage: fractureColour: YellowStreak Colour: WhiteHardness: Softer than fingernail

Moh’s Scale = 2Special properties: It has a physical and chemical structureUses: Gunpowder, matches, and fireworks


SulfurSulfur

Vaughn Kuemper Mineral Lab ppt

Documents

Transcript of Vaughn Kuemper Mineral Lab ppt