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A general guide for using the Forum with some rules and tips
Help with mineral identification
  
  Index -> FOR BEGINNERS: What is it? Where is it from?
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Rakun




Joined: 04 Nov 2019
Posts: 9

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PostPosted: Nov 04, 2019 12:54    Post subject: Help with mineral identification  

Recently I bought a box with minerals from a yard sale. Inside the box was a list with the minerals that were inside at one point, but some are missing, some were probably added later, and a lot are missing the identifying number.

Here is the list of the ones I can't identify:
1. Graphite C
3. Galenite Sb2S3
4. Galenite in sphalerite PbS-ZnS
5. Pyrite FeS2
6. Sphalerite ZnS
10. Hematite red Fe2O3
11. Hematite z Mn?
12. Chromite FeO.x Cr2O3
13. Limonite Fe2O3.xH2O
14. Bobovec (don't know how to translate this) Fe2O3.x H2O
15. Bauxite Al2O3.xH2O
21. Onyx marble?
22. Aragonite CaCo3
23. Hydrozincite ZnO.ZnCO3
24. Sadra (I believe it's Gypsum)
25. Barite BaSO4
27. Serpentine Ng3H4Si2O9
29. Kaolinite
32. Marl
33. Peat
34. Ksilit (i believe it to be petrified wood)
36. Lignite
37. Bituminous coal
38. Antracite
39. Bitumen
40. Limestone
42. Gabbro

Any help to connect the stones with the numbers would be appreciated.



1.jpg
 Dimensions: 5cm
 Description:
Very light
 Viewed:  2583 Time(s)

1.jpg



2a.jpg
 Mineral: Photo 2a
 Description:
Glass like, medium heavy
 Viewed:  2584 Time(s)

2a.jpg



3a.jpg
 Mineral: Photo 3A
 Description:
Very heavy, sparkles on light
 Viewed:  2587 Time(s)

3a.jpg



3b.jpg
 Mineral: Samo as 3a, different pic
 Description:
Heavy, has luster on light
 Viewed:  2585 Time(s)

3b.jpg



4.jpg
 Mineral: Photo 4
 Dimensions: 3cm
 Description:
Light, can write on paper, leaves red marks
 Viewed:  2583 Time(s)

4.jpg



5a.jpg
 Mineral: Photo 5
 Dimensions: 4cm
 Description:
Medium weigt, hard
 Viewed:  2583 Time(s)

5a.jpg



6a.jpg
 Mineral: Photo 6A
 Dimensions: 5cm
 Description:
Medium weight, has red-orange metalic luster on light
 Viewed:  2589 Time(s)

6a.jpg



6b.jpg
 Mineral: Photo 6B
 Dimensions: 5cm
 Description:
Samo mineral as Photo 6A
 Viewed:  2584 Time(s)

6b.jpg



7.jpg
 Mineral: Photo 7
 Dimensions: 3 cm
 Description:
Light
 Viewed:  2585 Time(s)

7.jpg



8a.jpg
 Mineral: Photo 8
 Dimensions: 2cm
 Description:
Very light and very britle... snaps very easily
 Viewed:  2588 Time(s)

8a.jpg



9.jpg
 Mineral: Photo 9
 Dimensions: 5cm
 Description:
Heavy, earthy luster
 Viewed:  2584 Time(s)

9.jpg



10a.jpg
 Mineral: Photo 10
 Dimensions: 2cm
 Description:
Very light and brittle
 Viewed:  2584 Time(s)

10a.jpg



11.jpg
 Mineral: Photo 11
 Dimensions: 2cm
 Description:
Light, some kind of rock?
 Viewed:  2584 Time(s)

11.jpg



12a.jpg
 Mineral: Photo 12a
 Dimensions: 3cm
 Description:
Light, hard
 Viewed:  2584 Time(s)

12a.jpg



12b.jpg
 Mineral: Photo 12b
 Dimensions: 3cm
 Description:
Same as 12A
 Viewed:  2580 Time(s)

12b.jpg


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Rakun




Joined: 04 Nov 2019
Posts: 9

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PostPosted: Nov 04, 2019 13:02    Post subject: Re: Help with mineral identification  

Here are the rest of the minerals.


13a.jpg
 Mineral: Photo 13a
 Dimensions: 3cm
 Description:
Looks like quartz but heavier
 Viewed:  2573 Time(s)

13a.jpg



13b.jpg
 Description:
Same mineral as 13a
 Viewed:  2576 Time(s)

13b.jpg



13c.jpg
 Mineral: Photo 13c
 Description:
Same as 13a
 Viewed:  2575 Time(s)

13c.jpg



14a.jpg
 Mineral: Photo 14a
 Dimensions: 3cm
 Description:
Medium weight, hard
 Viewed:  2577 Time(s)

14a.jpg



14b.jpg
 Mineral: Photo 14b
 Description:
Same as 14a
 Viewed:  2576 Time(s)

14b.jpg



15a.jpg
 Mineral: Photo 15
 Description:
Medium weight, hard
 Viewed:  2577 Time(s)

15a.jpg



15b.jpg
 Mineral: Photo 15b
 Description:
Same mineral as photo 15a
 Viewed:  2576 Time(s)

15b.jpg



16.jpg
 Mineral: Photo 16
 Description:
Something man made? Soft, it's in paper wrapping
 Viewed:  2577 Time(s)

16.jpg


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Firmo Espinar




Joined: 05 Apr 2017
Posts: 476
Location: Medellín, Colombia.


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PostPosted: Nov 04, 2019 16:53    Post subject: Re: Help with mineral identification  

Hi and welcome to FMF.

Usually you need to give us more information for an identify. You can find the help in:

Asking: "What is this? / Where is it from?"

And provide us with some basic information about every specimen and clear photographs.

I guess photo 5 is limonite, photo 7 is Hydrozincite, number 14 probably marble and photo 15 could be bauxite.

You also will find pictures writing a mineral name in the box: “Search for an image”. It´s an easy way to learn about your rocks and minerals.

Regards.
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Rakun




Joined: 04 Nov 2019
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PostPosted: Nov 06, 2019 03:25    Post subject: Re: Help with mineral identification  

OK, thanks for the reply. I'll try to give a more complete description of each mineral.
I don't know where they are from.

So the first one
Black colour
Metallic luster
Brown to gray streak
Hardness about 6
Somewhat heavy



20191106_091250.jpg
 Description:
 Viewed:  2366 Time(s)

20191106_091250.jpg



20191106_091300.jpg
 Description:
 Viewed:  2365 Time(s)

20191106_091300.jpg



20191106_091321.jpg
 Description:
 Viewed:  2363 Time(s)

20191106_091321.jpg


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Rakun




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PostPosted: Nov 06, 2019 03:41    Post subject: Re: Help with mineral identification  

2.

White to gray to some yellow color
Non-metallic, dull earthy luster.
Its not powdery
Reacts to vinegar
White streak
Hardness 4-5



20191106_091404.jpg
 Description:
 Viewed:  2358 Time(s)

20191106_091404.jpg



20191106_091458.jpg
 Description:
 Viewed:  2358 Time(s)

20191106_091458.jpg



20191106_091505.jpg
 Description:
 Viewed:  2357 Time(s)

20191106_091505.jpg


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Rakun




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PostPosted: Nov 06, 2019 03:47    Post subject: Re: Help with mineral identification  

3.
Gray colour
Metallic luster in some places (it shines on light)
Gray streak
Hardness 2-3 (harder to determine, but it can't scratch a copper coin)
Really heavy



20191106_091535.jpg
 Description:
 Viewed:  2353 Time(s)

20191106_091535.jpg



20191106_091542.jpg
 Description:
 Viewed:  2350 Time(s)

20191106_091542.jpg



20191106_091559.jpg
 Description:
 Viewed:  2350 Time(s)

20191106_091559.jpg


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Rakun




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PostPosted: Nov 06, 2019 03:51    Post subject: Re: Help with mineral identification  

4.
White color
Non metallic, dull
White streak
Hardness 1-2
Light
Reacts to vinegar
Soluble in water

Maybe it's some sort of clay? I have fireclay on the list?



20191106_091648.jpg
 Description:
 Viewed:  2348 Time(s)

20191106_091648.jpg



20191106_091654.jpg
 Description:
 Viewed:  2350 Time(s)

20191106_091654.jpg


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Rakun




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PostPosted: Nov 06, 2019 03:54    Post subject: Re: Help with mineral identification  

5.
Red to brown colour with some white spots
Non metallic, earthy, dull
Red-brownish streak
Hardness 2-3
Light weight



20191106_091635.jpg
 Description:
 Viewed:  2346 Time(s)

20191106_091635.jpg



20191106_091641.jpg
 Description:
 Viewed:  2349 Time(s)

20191106_091641.jpg



20191106_091623.jpg
 Description:
 Viewed:  2350 Time(s)

20191106_091623.jpg


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Rakun




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PostPosted: Nov 06, 2019 04:01    Post subject: Re: Help with mineral identification  

6.
Gray color
Metallic luster
Gray streak
Light weight
Chips off really easy



20191106_095538.jpg
 Description:
 Viewed:  2347 Time(s)

20191106_095538.jpg



20191106_095544.jpg
 Description:
 Viewed:  2347 Time(s)

20191106_095544.jpg



20191106_095604.jpg
 Description:
 Viewed:  2344 Time(s)

20191106_095604.jpg


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Rakun




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PostPosted: Nov 06, 2019 04:07    Post subject: Re: Help with mineral identification  

7.
White with little very light green
Non metallic
No light reflection, little greasy
White streak
Hardness 2-3



20191106_095628.jpg
 Description:
 Viewed:  2342 Time(s)

20191106_095628.jpg



20191106_095632.jpg
 Description:
 Viewed:  2342 Time(s)

20191106_095632.jpg



20191106_095637.jpg
 Description:
 Viewed:  2341 Time(s)

20191106_095637.jpg



20191106_095653.jpg
 Description:
 Viewed:  2341 Time(s)

20191106_095653.jpg


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