TEACHER ANSWER KEY TO ROCKS AND MINERALS STUDENT ACTIVITY BOOK OF PLATE COLOR LUSTER REACTS STREAK SAMPLE SAMPLE LETTERS ROCK OR NAME OF MINERAL STUDENT TEXTURE LOW SOFT LOW HARDNESS MAGNETIC WITH ACID CLEAVAGE HIGH HARD HIGH CONDUCTOR ELECTRICITY ELECTRICITY APPEARANCE TRANSPARENCY BLACK, ANTHRACITE SHINY, FINE NONE VARIES BLACK NO NO NO A (ROCK) OPAQUE BROWN, A FEW BLACK, PERFECT IN BIOTITE LIGHT SAMPLES GREEN, GLASSY, VERY FINE ONE 2.5 - 3.0 NO NO C (MINERAL) BROWN ARE TRANSLUCENT TO DIRECTION MAGNETIC TRANSPARENT PERFECT IN GRAY, YELLOW, WHITE, CALCITE FINE TO THREE GLASSY, TRANSPARENT 3 WHITE NO NO YES E (MINERAL) COARSE DIRECTIONS TO OPAQUE AT 75° PINK PINK, GOOD IN TWO FELDSPAR GLASSY TO PEARY, FINE 6 NONE NO NO NO F DIRECTIONS (MINERAL) OPAQUE GOOD IN WHITE FELDSPAR WHITE, GLASSY TO FINE TWO 6 NONE Q (MINERAL) PEARLY, OPAQUE NO NO NO DIRECTIONS COLORLESS TO PERFECT IN WHITE, GLASSY, HALITE FINE TO THREE TRANSLUSCENT 2.5 WHITE NO NO NO M (MINERAL) COARSE DIRECTIONS TO AT 90° TRANSPARENT DARK GRAY, VERY FINE, GRAYISH- GRAPHITE GOOD IN ONE METALLIC OR EARTHY, FEELS 1-2 BLACK, NO YES NO K (MINERAL) DIRECTION OPAQUE GREASY SHINY DARK A FEW DARK, A FEW A FEW HEMATITE FINE TO RED SAMPLES REDDISH BROWN, DULL NONE 5.5 - 6.5 SAMPLES SAMPLES N (MINERAL) MEDIUM OR ARE TO METALLIC, OPAGUE CONDUCT REACT BROWN MAGNETIC KAOLINITE BEIGE, GRAY OR WHITE, EXTREMELY NONE 2.0 - 2.5 WHITE NO NO NO D (MINERAL) DULL EARTHLY, OPAQUE FINE GRAY OR PINKISH-GRAY, LIGHT LIMESTONE FINE TO DULL, NONE VARIES GRAY OR NO NO YES T (ROCK) MEDIUM OPAQUE BROWN FINE TO A FEW MAGNETITE BLACK, METALLIC, COARSE NONE 5.5 - 6.5 BLACK YES SAMPLES NO P (MINERAL) OPAQUE GRANULAR CONDUCT MEDIUM TO PINK MARBLE PINK, PEARLY TO COARSE NONE VARIES WHITE NO NO YES G (ROCK) SPARKLING, OPAQUE GRANULAR WHITE MARBLE MEDIUM TO GRAY OR WHITE, PEARLY (ROCK) COARSE NONE VARIES WHITE NO NO YES B TO SPARKLING, OPAQUE GRANULAR BLACK, GREEN OR RED, OBSIDIAN GLASSY, GLASSY, OPAQUE TO NONE VARIES NONE NO NO NO R (ROCK) VERY FINE TRANSPARENT PUMICE GRAY, DULL TO GLASSY, POROUS NONE VARIES WHITE NO NO NO U (ROCK) OPAQUE MILKY-WHITE, QUARTZ FINE, GLASSY, NONE 7 WHITE NO NO NO S (MINERAL) GLASSY TRANSLUSCENT GRAY A FEW GRAY, DULL TO MEDIUM SANDSTONE NONE VARIES NONE NO NO SAMPLES L SPARKLY, OPAQUE GRANULAR (ROCK) REACT PINK PINK OR PINKISH-BROWN, NONE TO A FEW MEDIUM SANDSTONE DULL TO SPARKLY, NONE VARIES LIGHT NO NO SAMPLES O GRANULAR (ROCK) OPAQUE BROWN REACT DARK GRAY OR BROWN, A FEW SHALE BROWN DULL, FINE NONE VARIES NO NO SAMPLES I (ROCK) TO BLACK OPAQUE REACT SLATE DARK GRAY, DULL TO EXTREMELY NONE VARIES GRAY NO NO NO J (ROCK) SHINY, OPAQUE FINE TALC GRAY OR WHITE, PEARLY MEDIUM NONE 1 WHITE NO NO NO H (MINERAL) TO GREASY, OPAQUE 05/11 Copyright 2009 by the Board of Cooperative Educational Services for the Second Supervisory District of Monroe and Orleans Counties, Elementary Science Program. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical photocopying, recording, or otherwise, without the prior written permission of Monroe 2–Orleans BOCES, Elementary Science Program. .