Liam Murphy - GEOL200 - Lab Assignment 01 [Marked]

Liam Murphy 3540040 4 GEOL 200 - Introductory to Physical Geology Lab Assignmient #1 .-/ 20 May 1%t, 2021 g i - ) - H * 3 P Nic Vet Tudieawe Part One: Sample Number: 1 Properties (Diagnostic) Description Colour: Dark Metal Grey Lustre: _ Metallic o= Optical Properties: Safae et CQpaque, g o | gt A ¥ % e ok Dark Grey/Black + 2 Hardness: = TN ~ 1 (Talc and Fingernail will scratch this) Cleavage: dIaty ms 1 Plane of poor Cleavage sy, Spegific ,Gl'«a‘flW-" sl gt gHON2.2), L, M r e Crystal Form:* * - O DA T 1 “Hexagonal ™~ pooesress Other Properties: Reaction o Diluted HGI No Gveasy ;-l.e\ Magnetism: No : Tenacity: Sectile Identification: Graphite Sample Number: 2 Properties (Diagnostic) Description Colour: Shiny Dark Grey Lustre: Metallic Optical Properties: Opaque Streak: Dark Gre K Hardness: B 2-3 (Copper coin and Calcite will scratch this) R Cleavage: ] et . 3Planes of perfect Cleavage at 90° | 2 Specific Gravity: e L HEige), v LA Crystal Form: . R “Cubic Other Properties: 7 Reaction to Diluted HCI No Magnetism: No Identification: Gal Sample Number: 3 Properties (Diagnostic) Description Colour: Reddish Brown/Grey Lustre: Metallic H '_:I - CM\’K & Optical Properties: Opaque ) e Streak: Red ] Hardness: 5.5 (Feldspar will scratch this) Cleavage: . ~ No Cleavage, this mi Specific Gravity: Medium-Heawy (5.0) Crystal Form: L Trigonal Other Properties: Reaction to Diluted HCI No Magnetism: No % Identification: Hematite M 09 B \mtVUS\\/{ R(E}u«y&«\(\w\ \\M\ Liam Murphy GEOL 200 Athabasca University Page 1 of 5 Unit 2: Minerals and Rock Types Lab Assignment #1 May 1, 2021

Sample Number: 4 Properties (Diagnostic) Description ' Colour: Brass Lustler ~ Metallic Optical Properties: Opaque - . ' Z ( Hardness: 6.5 (Quartz will scratch this) _A' . | Cleavage: APleneofCleavege— Ve C/\QMQ‘(-— QVy LCIUAD Specific Gravity: | Medium- Heavy (5.0) : Crystal Form: Cubic , o Other Properties: [ ) } & o Reaction to Diluted HCI No 2 AT paa T > T4 Magnetism: No LacAntor s el Identification: Pyrite Sample Number: 5 Properties (Diagnostic) Description Sl Colour: Dark Grey/Black i % =~ 1 Lsve wemic N — oo W matie MR Optical Properties: Opaque : . - A~ 7 , 1 l{ Streak: Dark Grey/Black ; - Hardness: (Beryi=Top=z will Scratch This) \ ‘\—0'0 ‘M&q ()( Cleavage: Pl oage 00_cMaare o Wty - Gracfunt Specific Gravity: R Medium (5.2) i Crystal Form: / 1 ic (Octahedron) Other Properties: ¥ b Gd S‘? Al Reaction to Dilutled HCI N0~ 7° Magnetism: Yes Identification: Magnetite Sample Number: 7 Properties (Diagnostic) Description : [ Colour: Clear > ;_,;. Lustre: ~ Non-Metallic, Vitreous i Optical Properties: Transparent 55 | Streak: White % A e Hardness: 2.0 (Calcite will scratch this) Cleavage: Q\ BPlanes of Cleavage = \ Oy \ Specific Gravity: Light-Medium (2.3) Crystal Form: - “Monoglinic Other Properties: = ReactiontoDiluted H@l - * Mot to 0 = o T S L e e e Magnetism: No Identification: Gypsum Sample Number: 8 Properties (Diagnostic) e Description Colour: S gy iCleanfe, | TN L4 Lustre: = k Non-Metallic, Vitreous ¥l Optical Properties: Translucent At Streak: White e R LY ~Hardness: 2.5 (Calcite will scratch this) - St Cleavage: 3 Perfect planes of Cleavage at 90° ~ ’ e T Specific Gravity: Light-Medium (2) Crystal Form: Cubic Other Properties: Reaction to Diluted HCI Soluble Double Refraction: ~ No Magnetism: No Taste: Salty Taste Identification: Halite ‘s 3 & 5 'S | A % 22 - NY 7 P o | g ‘ J q 4 i ¢ Liam Murphy Unit 2: Minerals and Rock Types GEOL 200 Lab Assignment #1 Athabasca University Page 2 of 5 May 1, 2021

Properties (Diagnostic) Description g G . NN N = Colour. LiohtPink — W3- Caan WAL (MM CO\OM 5 Lustre: , ; ) Non-Metallic, Pearly j IRIBTY i _Optical Properties: 5 Opaque g0 Streak: e T , €=7 Hardness: _ 6.0 (Quartz will scratch this) Cleavage: 2 Good planes of Cleavage. almost at 90° Specific Gravity: B ~ Medium (2.5) Crystal Form: Triclinic Other Properties: , * | ) P el (11 2 #Reagtionto DildtedHEl A MNow, fy % < S M : it L, Magnetsm: . No s i L ( {\ @ g \ w11 Striation: Yes. Fine striations that are not twinned. Cea fifiw w1 W\\u‘& Identification: Microcline (Feldspar) 3 Sample Number: 20 Properties (Diagnostic) Description Colour: i ~ Dark Grey, Green Hue Lustre: " ) Non-Metallic, Dull Optical Properties: Opaque ~ Streak: ~ White hod Hardness: ST 6 (Quartz will scratch this) e Cleavage: . 2 Good planes of Cleavage, almost at 90° ‘Specific Gravity: ot i1l Medium (3.2) Crystal Form: = Monoclinic Other Properties: . Reaction to Diluted HCI ~~ No Magnetism: No Identification: Pyroxene Sample Number: 22 Properties (Diagnostic) Description Colour: rr A LA S deh AL, aBlECK pgr}g‘ Green:+¢ : Lustre: ; f" WA i ‘ “Non-Metallic, Vitreous Optical Properties: i Translucent Streak: Light Grey , , , (NG Hardness: ) 2 (Fingernail will scratch this) g } ~Cleavage: 1 Perfect plane of Cleavage, splits into flexible sheets Specific Gravity: Medium (2.7) Crystal Form: Monoclinic _ Other Properties: | Reaction to Dilutled HCI ~~ No Magnetism: " No Tenacity - 10 Identification: Biotite Sampie Number: 24 Properties (Diagnostic) ” Description 7 Colour . —_ DawGrey N :— COMW TR e Goul5 Luste: syl A s s et TdbaeS XY 7 :,I— we o ,,(' bu 5 Optical Properties: ‘Opaque Streak: s White EoT Hardness: 6.0 (Feldspar will scratch this) Bigh ] Cleavage: , ~ Two good prismatic planes of Cleavage (56° and 124° ‘Specific Gravity: e Medium (3.0) Crystal Form: ; o ~_ Monoclinic. Other Properties: ) V ~Reaction to Diluted HCI No Magnetism: No Identification: Hornblende Sample Number: 16 5HM/_V\A‘ \Q““rx \M\ D ol 0(1(0\—/ 2 oV c\aoov\e s Sem (@ Wor- WS Wk s = sofpled Ww\(z\ Liam Murphy GEOL 200 Athabasca University Page 4 of 5 43¢ 95 ¢ g0 Unit 2: Minerals and Rock Types Lab Assignment #1 May 1, 2021

Part Two: 1. Many minerals can share the same physical properties, and in some cases look almost identical. Take Hematite and Magnetite for an Magnetite having a Black Streak). Furthermore Magnetite holds a magnetic property that can easily distinguish it from other mineral (ie 3 example, both minerals display a dark colour but upon inspection the streaks of each mineral differ (Hematite having a red streak and Hematite) this is not a clearly obvious property upon looks. \ \\ \e, 2. Diagnostic properties of Olivine. ol +o.fg fia'\;Ca"’hL":v\Mm ona Olivine: Texture: Granular Colour: Green ‘Ji Cleavage: Poor cleavage —=7 Neo C\Q avay - C WUKAO ka Hardness: 6-7 Qw évm 3. Diagnostic properties of Halite. Halite: Hardness: 25 Cleavage: Three perfect planes of cleavage at 90° Colour: Light/Clear Lustre: Vitreous Taste: Salty Taste 4. Examine samples of potassium feldspar and plagioclase feldspar. a. What are four common physical properties of these minerals? Physical Properties Potassium Feldspar Plagioclase Feldspar LA . Cleavage | TwoGoodPlanes Two Good Planes d’p __ Hardness | e L MGG U E P 51 (Tl oo e Lustre Non-Metallic (Pearly) Non-Metallic (Pearly) 5 b. What physical property best distinguishes plagioclase feldspar from potassium feldspar? Plagioclase feldspar displays straight “hairline” grooves on the cleavage surfaces known as striations due to polysynthetic twinning. \{p 5 5. Examine the samples of Plagioclase Feldspar, Pyroxene, and Amphibole in your mineral sample kit. a. List four physical properties that these minerals have in common. Physical Properties Plagioclase Feldspar Pyroxene Amphibole ZERENERIIIT T TSR R White . Whie ( 5 20 _ Cleavage Pl . Two Good Planes Tw QB»*O Hardness | 1 56 000 e 6.0 NG Lustre Non-Metallic Non-Metallic Non-Metalli b. What properties best distinguishes Amphibole from Pyroxene and Plagioclase? 5 Cleavage: Although Amphibole, Plagioclase Feldspar, and Pyroxene all have two good planes of cleavage, the Plagioclase Feldspar and the Pyroxene both have their planes of cleavage intersect at almost a 90° angle whereas the Amphibole have prismatic cleavage intersecting at a 56° and 124°. ‘10 5 \ [} c. What property best distinguishes pyroxene from plagioclase? , p/ Colour: Plagioclase Feldspar has a light/ light pink colour to it whereas Pyroxene has a Dar/Green Hue to it. Colouy vrvtlevamds - stewabome % WaesiR gy 0 cwv\cm}( Yo SK/\u\FS\w\D\\\\ u\\s\mfi\\ 1R Liam Murphy Unit 2: Minerals and Rock Types GEOL 200 Lab Assignment #1 Athabasca University Page 5 of 5 May 1, 2021