Follow-up from 02/06/14

Winter Wren

From the Ohio Bird Banding website



Bagworm Moth

From Wikipedia

Moh's Hardness Scale
Hardness	Mineral	Description
1	Talc	Fingernail scratches it easily.
2	Gypsum	Fingernail scratches it.
3	Calcite	Copper penny scratches it.
4	Fluorite	Steel knife scratches it easily.
5	Apatite	Steel knife scratches it.
6	Feldspar	Steel knife does not scratch it easily, but scratches glass.
7	Quartz	Hardest common mineral. It scratches steel and glass easily.
8	Topaz	Harder than any common mineral.
9	Corundum	It scratches Topaz.
10	Diamond	It is the hardest of all minerals.

From http://library.thinkquest.org/J002289/mohs.html 

Moh's Hardness Scale

Hardness

Mineral

Description

1

Talc

Fingernail scratches it easily.

2

Gypsum

Fingernail scratches it.

3

Calcite

Copper penny scratches it.

4

Fluorite

Steel knife scratches it easily.

5

Apatite

Steel knife scratches it.

6

Feldspar

Steel knife does not scratch it easily, but scratches glass.

7

Quartz

Hardest common mineral. It scratches steel and glass easily.

8

Topaz

Harder than any common mineral.

9

Corundum

It scratches Topaz.

10

Diamond

It is the hardest of all minerals.