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| | Portlandite from Dabrowka Wielka, Siemianowice Slaskie, Katowice area, Slaskie (Upper Silesia), Poland |
 | | Portlandite from Dabrowka Wielka, Siemianowice Slaskie, Katowice area, Slaskie (Upper Silesia), Poland |
 | | Dabrowka Wielka, Siemianowice Slaskie, Katowice area, Slaskie (Upper Silesia), Poland |
 | | Due to XRD data it's main constituent of white, periclase-bearing accumulations. |
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