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        <link:definition>0213 - Disclosure - Segment Information</link:definition>
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        <link:definition>0214 - Disclosure - Related Party Transactions</link:definition>
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  <element id="lxu_PrincipalAmountOfMembershipInterestOfLlcSoldForPromissoryNote" name="PrincipalAmountOfMembershipInterestOfLlcSoldForPromissoryNote" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
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  <element id="lxu_CarbonCreditLowerRangeOfAskOrBidPrice" name="CarbonCreditLowerRangeOfAskOrBidPrice" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
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  <element id="lxu_InterestRateSwapDecliningBalanceEndingBalance" name="InterestRateSwapDecliningBalanceEndingBalance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="lxu_OperatingLossCarryforwardsUtilizedCurrentPeriod" name="OperatingLossCarryforwardsUtilizedCurrentPeriod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="lxu_ExpenseAssociatedWithModificationOfSecuredTermLoan" name="ExpenseAssociatedWithModificationOfSecuredTermLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
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  <element id="lxu_PaymentsOnContractualObligationsOfCarbonCredits" name="PaymentsOnContractualObligationsOfCarbonCredits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
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  <element id="lxu_EstimatedShareOfAnnualOperatingCostOfPipelineMinimum" name="EstimatedShareOfAnnualOperatingCostOfPipelineMinimum" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="lxu_EstimatedShareOfAnnualOperatingCostOfPipelineMaximum" name="EstimatedShareOfAnnualOperatingCostOfPipelineMaximum" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
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  <element id="lxu_ModifiedDebtInstrumentPrincipalAmount" name="ModifiedDebtInstrumentPrincipalAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
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  <element id="lxu_SecuredTermLoanPeriodicPaymentTermsBalloonPaymentAmount" name="SecuredTermLoanPeriodicPaymentTermsBalloonPaymentAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
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  <element id="lxu_NaturalGasPurchaseCommitmentsWeightedAverageCostPerUnit" name="NaturalGasPurchaseCommitmentsWeightedAverageCostPerUnit" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
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  <element id="lxu_PutOptionExercisePeriodUnderRealEstateAgreement" name="PutOptionExercisePeriodUnderRealEstateAgreement" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="lxu_MaturityPeriodOfShortTermInvestments" name="MaturityPeriodOfShortTermInvestments" type="us-types:durationStringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="lxu_GeneralCorporateExpensesAndOtherBusinessOperationsTableTextBlock" name="GeneralCorporateExpensesAndOtherBusinessOperationsTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
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  <element id="lxu_MonthPurchaseCommitmentPeriodEndsNaturalGas" name="MonthPurchaseCommitmentPeriodEndsNaturalGas" type="us-types:dateStringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
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  <element id="lxu_TwelveMonthAverageClosingPricePerCommonStockShare" name="TwelveMonthAverageClosingPricePerCommonStockShare" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
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  <element id="lxu_RealEstatePropertiesByGeographicalLocationAxis" name="RealEstatePropertiesByGeographicalLocationAxis" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" xbrli:periodType="duration" />
  <element id="lxu_RealEstatePropertiesByGeographicalLocationDomain" name="RealEstatePropertiesByGeographicalLocationDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="lxu_OptionIndexedToRealEstatePropertyTypeAxis" name="OptionIndexedToRealEstatePropertyTypeAxis" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" xbrli:periodType="duration" />
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  <element id="lxu_CustomerDepositsCurrentAndNoncurrent" name="CustomerDepositsCurrentAndNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
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  <element id="lxu_LineOfCreditFacilityUnusedLetterOfCreditFeePercentage" name="LineOfCreditFacilityUnusedLetterOfCreditFeePercentage" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="lxu_ConvertibleSeniorSubordinatedNotesDueTwoZeroOneTwoMember" name="ConvertibleSeniorSubordinatedNotesDueTwoZeroOneTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="lxu_NetGainLossOnCarbonCredits" name="NetGainLossOnCarbonCredits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="lxu_PaymentsAssociatedWithInducedConversionOfConvertibleDebt" name="PaymentsAssociatedWithInducedConversionOfConvertibleDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
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  <element id="lxu_DeductibleAmountForBusinessInterruptionInsuranceCoverageInDollars" name="DeductibleAmountForBusinessInterruptionInsuranceCoverageInDollars" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
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</schema>
</XBRL>
