[DOC] [TLE] Mohs' Hardness - Science Learning Space [PAR] The scale goes from 1 to 10, with 10 being the hardest minerals. ... 1. Number 
your samples on the data table and place each rock on the table. ... Scale, where 
1 is the softest and 10 is the hardest: Mohs' Scale of Hardness. 1. Talc ... powdery 
trail on the harder mineral (this is what we did with the Streak Test, as the tile has
... [DOC] [TLE] Mineral ID_Key - Bob's Rock Shop [PAR] If a sample of some unknown mineral does not "key out" to one of the common .... 
Mohs Scale of Relative Hardness is used, and is presented here with the ..... and 
asterism are peculiar to a limited number of species, or varieties of species. ...... 
Monoclinic, usually as earthy crusts or powdery coatings on cobalt minerals, may
... [DOC] [TLE] Mineral Identification [PAR] Calcite is used to define hardness 3 in the Mohs scale of mineral hardness. ... are 
named arbitrarily according to this scheme, where the numbers are percents: ..... 
White; H = 1 to 2.5; D = 2.6; dull luster; greasy feel, earth odor, powdery. [DOC] [TLE] 20 Common Minerals - Cochise College [PAR] 1. muscovite mica ... Hematite ranges in color from a powdery brownish red to 
black to a metallic black. ... It is relatively soft at 3.5 on Mohs scale of hardness. [DOC] [TLE] Hematite - Wikipedia [PAR] Hematite, also spelled as haematite, is the mineral form of iron(III) oxide (Fe2O3), 
one of ... Mohs scale hardness, 5.56.5 ... The powdery mineral was first used 
164,000 years ago by the Pinnacle-Point man possibly for social purposes. [DOC] [TLE] Minerals Lesson #11 - Volcano World [PAR] Some minerals can be both crystalline and amorphous. ... scratch steel while 
other minerals are so soft that they feel powdery and can be scratched easily by a 
fingernail. .... It is given the distinction of being number 1 on Mohs hardness scale
. [DOC] [TLE] Properties of Minerals - Rocks and Minerals [PAR] Mineralogists use a number of tests on the physical properties of minerals to ... 
Trace minerals have little influence on the reflection of the small powdery 
particles of the ... Hardness is one of the better properties of minerals to use for 
identifying a mineral. ... The Mohs scale is a set of 10 minerals whose hardness is 
known. [DOC] [TLE] The Mohs scale of mineral hardness characterizes the scratch ... [PAR] See more about Mohs Scale, The Germans and Minerals. ... Mohs hardness 
scale, with a lot of minerals reviewed. I searched a ..... Level One starts at $ 
1295.00. [DOC] [TLE] Rock Properties - The Guide to Rocks and Minerals [PAR] It is one of the easiest properties to study and it is a very useful diagnostic ... In 
1812 a German mineralogist, Frederich Mohs, devised a hardness scale ... If you 
have a reasonable number of rocks you can probably assemble the scale from 
your ... the hardness of 1 feels greasy and is very soft and powdery; a fingernail 
has... [DOC] [TLE] Definition of a Rock Properties of Minerals: Tools for Identification ... [PAR] scratching (not breakage).  Mohs Hardness Scale (Softest = 1, Hardest = 10) ... 
The color of the powdery residue of a mineral left behind when you drag it across
... [DOC] [TLE] Minerals Lab. (Page 2) [PAR] Aug 20, 2009 ... Moh's Hardness Scale (Softest = 1, Hardest = 10) ... STREAK: The color of the 
powdery residue of a mineral left behind when you drag a... [DOC] [TLE] Silica (quartz) Silica, SiO2, is a white or colorless crystalline ... [PAR] mineral with a hardness of 7 on the MOHS scale. Silica, Sa ... Silica (quartz): 
Silica, SiO2, is a chemical compound that is composed of one silicon atom and 
two... [DOC] [TLE] Mineral ID Guide [PAR] Powdery or chalky? Smooth like glass? Sharp like metal? ... Hardness - Mohs 
Scale of Hardness is commonly used to determine the hardness of a mineral 
ranging from 1 for the

Question: This "powdery" mineral is number 1 on the Mohs scale of hardness
Answer: talc