For science, we are doing an unknown mineral identity lab. I have narrowed it down to eaither natrolite orthoclase, although I think it could be serpertie or stilbite. If there is a web site to find this out, please tell me. Other wise, heres what I found out
color-dark oragne, tan, green
streak-white
luster- silkey
fluorescence- no
double refraction- no
specific gravity- 2.09
hardness- 6
crystal system- Monoclinic
Fracture- Hackly
Magnetism- none
not acidic
Hope that helps, a few thigns can varie up there like luster and color, and please help me identify this!
2006-12-12 09:31:55 · 3 answers · asked by steveo 3 in Science & Mathematics ➔ Earth Sciences & Geology
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2006-12-12 09:40:30 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Smell it - if no smell of sulphur, drop stibnite. It also soils finger. (the colour, streak, lustre, sp.gr.and hardness are excluding stibnite)
Natrolites are fibrous zeolites, are not coloured and commonly found as cavity-filling.
Orthoclase is a possibility, only the colours are not matching and lustre is also vitreous to pearly and not silky, but it will not be easy for you to see the difference. Other feldspars like microcline or plagioclase are also possible.
Considering all the properties, I would like to tick Serpentine of the four minerals you suggested.
But be sure it is not a feldspathoid like Nepheline, Sodalite or Leucite.
2006-12-13 05:02:52 · answer #2 · answered by saudipta c 5 · 1⤊ 0⤋
I think it is copper.
2006-12-12 09:40:12 · answer #3 · answered by Anonymous · 0⤊ 1⤋