Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Toward developing improved Mandarino Compatibility Indices (Kp/Kc)   The specific-refractivity (K) model for a whole-rock powder is presented.
Successful, innovative completion of this reconnaissance suggests that ignoring
creation of statistically-significant specific refractivities (Kp), when
describing mineral or rock samples, hampers the development of Science.
Automation of all related technologies is suggested; as is the need for yet
greater, more-widespread cooperation to work on standard samples, in order both
to facilitate inter-laboratory instrument calibrations and to improve
discrimination among samples.

18
The categories of this paper are: econ
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc