-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 VmH8o0IuHPgwLhC/BQftOi3tysSUYNZ8d4HLGrAfkNGWTd6iOMD3s0mp9AKwydjw
 dCQjryQ2rZfL4Gp04DkzBQ==

<SEC-DOCUMENT>0001414367-10-000003.txt : 20100421
<SEC-HEADER>0001414367-10-000003.hdr.sgml : 20100421
<ACCEPTANCE-DATETIME>20100421120027
ACCESSION NUMBER:		0001414367-10-000003
CONFORMED SUBMISSION TYPE:	D/A
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
FILED AS OF DATE:		20100421
DATE AS OF CHANGE:		20100421
EFFECTIVENESS DATE:		20100421

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Luca Technologies Inc
		CENTRAL INDEX KEY:			0001414367
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		D/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-140458
		FILM NUMBER:		10761031

	BUSINESS ADDRESS:	
		STREET 1:		500 Corporate Circle
		STREET 2:		Suite C
		CITY:			Golden
		STATE:			CO
		ZIP:			80401
		BUSINESS PHONE:		303-534-4344

	MAIL ADDRESS:	
		STREET 1:		500 Corporate Circle
		STREET 2:		Suite C
		CITY:			Golden
		STATE:			CO
		ZIP:			80401
</SEC-HEADER>
<DOCUMENT>
<TYPE>D/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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        <cik>0001414367</cik>
        <entityName>Luca Technologies Inc</entityName>
        <issuerAddress>
            <street1>500 Corporate Circle</street1>
            <street2>Suite C</street2>
            <city>Golden</city>
            <stateOrCountry>CO</stateOrCountry>
            <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
            <zipCode>80401</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>303-534-4344</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <previousName>Luca Technologies LLC</previousName>
            <previousName>Clearflame Resources LLC</previousName>
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            <value>None</value>
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        <entityType>Corporation</entityType>
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            <overFiveYears>true</overFiveYears>
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            <relatedPersonName>
                <firstName>Robert</firstName>
                <lastName>Pfeiffer</lastName>
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            <relatedPersonAddress>
                <street1>c/o Luca Technologies Inc.</street1>
                <street2>500 Corporate Circle, Suite C</street2>
                <city>Golden</city>
                <stateOrCountry>CO</stateOrCountry>
                <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
                <zipCode>80401</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
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            <relatedPersonName>
                <firstName>Brian</firstName>
                <lastName>Cree</lastName>
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                <street2>500 Corporate Circle, Suite C</street2>
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                <lastName>Mahaffey, Ph. D.</lastName>
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                <street2>500 Corporate Circle, Suite C</street2>
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                <firstName>Eric</firstName>
                <lastName>Szaloczi</lastName>
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                <street1>c/o Luca Technologies Inc.</street1>
                <street2>500 Corporate Circle, Suite C</street2>
                <city>Golden</city>
                <stateOrCountry>CO</stateOrCountry>
                <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
                <zipCode>80401</zipCode>
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            <relatedPersonName>
                <firstName>Ray</firstName>
                <middleName>P.</middleName>
                <lastName>Lane</lastName>
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                <street1>c/o Luca Technologies Inc.</street1>
                <street2>500 Corporate Circle, Suite C</street2>
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                <firstName>Matthew</firstName>
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            <relatedPersonName>
                <firstName>Josef</firstName>
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    <offeringData>
        <industryGroup>
            <industryGroupType>Other Energy</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
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            <dateOfFirstSale>
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        <durationOfOffering>
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        <typesOfSecuritiesOffered>
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        <businessCombinationTransaction>
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        <minimumInvestmentAccepted>130500</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
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                <issuerName>Luca Technologies Inc</issuerName>
                <signatureName>Brian J. Cree</signatureName>
                <nameOfSigner>Brian J. Cree</nameOfSigner>
                <signatureTitle>CFO</signatureTitle>
                <signatureDate>2010-04-21</signatureDate>
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-----END PRIVACY-ENHANCED MESSAGE-----