PROBLEM SET 5----PHYSICAL PROPERTIES

Match the specific physical property with the description.  Choose the best answer.
______1 chatoyancy	a. closely spaced fractures can cause a changing or play of colors as  mineral is rotated
______2.thermoluminescence	b. needlelike crystals
______3.ductile	c. inability of a mineral to break in a consistent fashion
______4.iridescence	d. small spherical grains of mineral
______5.black calcite caused                by MnO2 dispersions	e. mineral inclusions
______6.tenacity	f. silky or wavy appearance on the surface of minerals
______7.fracture	g. emission of light when bombarded with x-rays or UV light
______8.acicular	h. color caused by presence of small concentrations of element (s)
______9.specific gravity	i. emission of light when mineral is heated below "red hot ' temperature
_____10.chromophores	j. kidney shaped mineral masses
_____11.cleavage	k. a smooth curved breakage
_____12.oolitic	l. a mineral can be drawn into wire
_____13.fluorescence	m. ability of a mineral to break in a consistent way .
_____14.reniform	n. related to the kinds of atoms comprising the mineral
_____15.concoidal	o. cohesiveness of a mineral
Match the physical property with an example of one or more minerals
_____1. chatoyancy	a. quartz and diamonds
_____2. fluorescence	b. labradorite or opal
_____3. ductile	c. apatite
_____4. iridescence	d. quartz and tourmaline
_____5. asterism	e. Fe, Mn, Ni, Cu
_____6. vitreous	f.  emerald

_____7. 2 directions of               cleavage	g. rubies and sapphires
_____8. piezoelectricity	h. hematite
_____9. 5 on hardness scale	i.  malachite
____10. chromophores	j. satin spar gypsum and tiger's eye quartz
____11. Cr+3 chromophore             causing a green color	k. amethyst
____12. oolitic	l. cordierite
____13. Cu composition             causing a green color	m. some examples of fluorite and scheelite
____14. Fe in quartz	n. gold and native Cu
____15. dichroism	o. feldspars, augite and hornblende

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